# Geometry Calculators

When you are taking geometry lessons, it may seem that you won’t ever apply these rules and formulas. However, if you take a closer look at each one of these shapes and at the world that surrounds you, you’ll see them in many different places.

While a lot of students have some problems with geometry, especially the most advanced calculations, the truth is that it doesn’t need to be difficult or hard.

So, in order to give you a hand, here are the best free online geometry calculators that you can use in order to help you. Please notice that we divided them into multiple categories – the type of geometry, as well as by skill level.

**#1: Basic Plane Geometry**

**1.1 – Circles**

**1.1.1 – Multiple Functions: **

1728.org’s Circle Calculator – This calculator will help you discover the two missing variables when you already know the other two (two of the four – height, radius, volume, and area).

CalculatorSoup.com’s Circle Calculator– This is one of the best calculators for circles. After all, you just need to select from the drop-down menu what you want. The options include the radius, the circumference, and the area.

EasyCalculation.com’s Circle Calculator– This is a great calculator when you want to determine the circumference, the area, and even the diameter of a circle.

EasyCalculation.com’s Radius of a Circle– This is the right calculator to determine the radius of a circle when you already have 4 different points. In addition, this calculator also displays a diagram to help you better understand.

Free-Online-Calculator-Use.com’s Circle Calculator– This calculator is very easy to use. In addition, you will also find some good tutorials about the radius, diameter, circumference, and area of the circle.

MathPortal.org’s Circle Calculator – If you are a visual person, you’re going to love this calculator. After all, it shows you a simple circle diagram that has the diameter and radius marked. You just need to enter one value that you know, and the calculator will tell you the values of the circumference, the area, the diameter, or the radius.

NCalculators.com’s Circle Calculator – When you just know the radius, this free online calculator will determine the diameter, area, and circumference.

WebMath.com’s Find Out Things About Circles – Besides the calculator itself that allows you to easily determine the area, circumference, diameter, or the radius of the circle, this calculator also includes formulas as well as good tutorials.

**1.1.2 – Circumference**

Basic-Mathematics.com’s Circumference Calculator – When you simply want to calculate the circle’s circumference, all you need to do is to insert the radius length.

CSGNetwork.com’s Circle and Sphere Area Calculator – With this calculator, you can easily determine the circumference, diameter, radius, and the area of a specific circle by providing a known value. In addition, you can also determine the sphere’s surface volume and area.

MathGoodies.com’s Circumference Calculator – When you just want to discover the circumference, this is one of the easiest and quickest online calculators that you can use. All that you need to do is to insert the radius.

TutorVista.com’s Circle Calculator – Whenever you know the radius of a circle, with this calculator you can easily determine its circumference, area, or diameter.

**1.1.3 – Area**

Basic-Mathematics.com’s Area of a Circle Calculator – This is a simple calculator where you just need to insert the radius of the circle and it will determine the area of the circle for you.

MathIsFun.com’s Area of a Circle Calculator – This calculator is one of the best ones that you can use. Besides it is very useful, it is also fun. The reality is that it starts by displaying a circle diagram and where you’ll need to input the values that you know. Just try to change one of the values and you’ll see the other ones changing instantly.

**1.2 – Polygons**

**1.2.1 – Multiple Functions**

1728.org’s Regular Polygon Calculator – This polygon calculator is very easy to use and intuitive. Just fill in the data it asks and you’ll get the answer to your question fairly quickly.

Arachnoid.com’s Polygon Calculator – This calculator will help you determine the area and other properties of a polygon based on the radius.

CalculatorSoup.com’s Regular Polygon Calculator – This is one of the most complete polygon calculators. It doesn’t only allow you to determine the polygon’s perimeter, area, circumradius, inradius, and side length, as it also has some incredible tutorials.

CleaveBooks.co.uk’s Regular Polygon Calculator – This is an extremely easy to use calculator. All you need to do is to insert the length and the number of edges and it will determine the circum-radius, the in-radius, and the area. In addition, you can also check their polygons tutorials.

EasyCalulation.com’s Polygon Calculator – When you only know one of the variables, just insert it to determine the area or the perimeter of the polygon.

EasyCalculation.com’s Regular Polygon Calculator – In order to use this calculator, you just need to insert the circum-radius of the polygon as well as the number of sides it has, and the calculator will tell you the area ratio, the area, and even the length of its sides.

Math.Rutgers.Edu’s Regular n-gon Calculator – One of the best things about this free online calculator is that it displays a detailed polygon diagram.

TutorVista.com’s Polygon Calculator – With this calculator, you can choose the way you want to calculate the polygon’s area.

**1.2.2 – Area Calculators**

Keisan.Casio.com’s Area of a Regular Polygon Calculator – With this calculator, just enter the side length and the number of sides of the polygon and it immediately tells you the area.

MeraCalculator.com’s Area of a Polygon Calculator – One of the main advantages of this calculator is that it calculates not only the area ut the perimeter as well. In addition, you’ll be able to use 4 different methods.

NCalculators.com’s Regular Polygon Area Calculator – This is one of the quickest calculators to give you the area of a polygon. In addition, it’s also a good source of formulas and tutorials.

**1.3 – Pythagorean Theorem and Right Triangles**

**1.3.1 – Multiple Functions**

AnalyzeMath.com’s Right Triangle Solver – This is a great tool when you want to know more about your triangle. After all, it includes four different calculators depending on what you know about it.

CalculatorSoup.com’s Right Triangles Calculator – This is a complete calculator that allows you to retrieve a lot of information. In case you know two sides of the triangle, this calculator will be able to determine the altitudes, the area, the semi-perimeter, the perimeter, and the other side of the triangle as well. In addition, you can also check their amazing tutorials.

CleaveBooks.co.uk’s Right Triangles Calculator – In order to use this calculator, you’ll need to know at least two variables of the right triangle. You can also check their tutorials that can be very helpful.

CSGNetwork.com’s Right Triangle Angle and Side Calculator – Again, you just need to know two variables for the calculator to provide you with the values that you don’t know.

EndMemo.com’s Right Triangle Calculator – Besides making the calculations in a fast way, you can also take advantage of a comprehensive formula’s list.

KylesConverter.com’s Right Triangle Calculator – When you’re looking for a calculator that includes different features, this may be it. After all, it even includes unique chalk-board-style diagrams.

MathPortal.org’s Right Triangle Calculator – In case this is the first time you use this kind of calculators, this is probably the first one you should try. Just click the General Example and you’ll discover everything you need to do.

TutorVista.com’s Right Triangle Calculator – This is a great calculator to discover the area, perimeter, and the hypotenuse length of the triangle by simply entering the two sides of the triangle.

WebMath.com’s Find Out Things About Right Triangle Calculator – Besides tips about right triangles, this calculator allows you to discover the volume, perimeter, and area of a specific triangle.

**1.3.2 – Pythagorean Theorem**

1728.org’s Pythagorean Theorem Calculator – When you know one of the sides and the hypotenuse, this calculator will help you know the other side. This calculator also helps you better understand the Pythagorean Theorem.

Basic-Mathematics.com’s Pythagorean Theorem Calculator – When you want to use the Pythagorean Theorem, this is one of the easiest calculators that you can use.

MiniWebTool.com’s Pythagorean Theorem Calculator – This calculator provides you with a brief introduction to the Pythagorean Theorem and allows you to discover the value of the last side of the triangle.

NCalculators.com’s Pythagorean Theorem Calculator – This calculator stands out because it also includes a labeled diagram.

**1.3.3 – Area**

OnlineConversion.com’s Area of a Right Triangle Calculator – This is one of the fastest calculators that you have that will tell you the triangle’s perimeter as well as its area.

**1.4 – Rectangles**

**1.4.1 – Multiple Functions**

CalculatorSoup.com’s Rectangle Calculator – With this calculator, you’ll easily determine the diagonals, perimeter, area, or the side of the rectangle. All you need to do is to input two values.

EasyCalculation.com’s Rectangle Calculator – This calculator is incredibly fast. In addition, and besides allowing you to determine the area of a rectangle, you can also determine the perimeter of a parallelogram.

EndMemo.com’s Rectangle Calculator – Whenever you know two values of the rectangle, you’ll be able to discover the ones that are missing. In addition, you can count on seeing rectangle formulas displayed as well as a labeled rectangle diagram.

Keisan.Casio.com’s Rectangle Calculator – With a clean design and very easy to use, this calculator will allow you to calculate the perimeter and the area of a rectangle.

MathPortal.org’s Rectangle Calculator – With just two values, you’ll be able to discover the diagonal, perimeter, area, and side lengths of the rectangle. In addition, and this is the first time you’re using such an online calculator, you can simply click on the General Example button and follow the instructions.

MeraCalculator.com’s Rectangle Calculator – Besides providing you the perimeter and area formulas, this calculator will calculate them for you.

NCalculators.com’s Rectangle Calculator – All you need to know is the length and width of the rectangle. From here, this calculator will retrieve the area, perimeter, and the diagonal length of the rectangle.

RechnerOnline.de’s Rectangle Calculator – This is one of the easiest online calculators that you can use to determine the rectangle’s perimeter, area, and diagonal.

WebMath.com’s Find Out Things About Rectangles – This page is a great source of information and tutorials about rectangles and its formulas. In addition, you just need to input the width and height of the rectangle to discover its volume, area, diagonal, and perimeter.

**1.4.2 – Perimeter**

TutorVista.com’s Perimeter of a Rectangle Calculator – This is a great online calculator that will help you determine the perimeter of a rectangle.

**1.4.3 – Area**

OnlineMSchool.com’s Area of a Rectangle Calculator – This is one of the best ways that you have to determine the area of a rectangle.

TutorVista.com’s Area of a Rectangle Calculator – All you need to do is to follow the instructions provided in order to determine the area of the rectangle.

**1.4.4 – Diagonal**

TutorVista.com’s Diagonal Calculator – When you just want to discover the value of the rectangle’s diagonal, this is one of the easiest calculators you can use.

**1.5 – Squares**

**1.5.1 – Multiple Functions**

CalculatorSoup.com’s Square Calculator – With a lot of information available about squares and squares formulas, you’ll be able to determine the square’s area, perimeter, diagonal length, and side length with only one known variable.

EasyCalculation.com’s Square Calculator – With this easy to use calculator, you’ll be able to determine the diagonal, perimeter, and area of the square.

MathPortal.org’s Square Calculator – Besides allowing you to calculate the diagonal, perimeter and area of a square, this calculator also shows you the most used formulas for squares as well as examples.

MeraCalculator.com’s Square Calculator – Besides allowing you to determine the diagonal length, perimeter, and area of a certain square, this calculator also teaches you all the squares’ properties.

NCalculators.com’s Square Calculator – This is one of the quickest ways that you have to discover the area, perimeter, or diagonal length of a square.

TutorVista.com’s Square Calculator – One of the best things about this calculator is that besides providing you with all the results the others provide, it teaches you on how to do it as well as it shows you different examples.

WebMath.com’s Find Out Things About Squares – With this calculator, all you need to do is to choose what you’re looking to determine – the area, diagonal, perimeter, or side length of a square.

**1.5.2 – Perimeter**

AJDesigner.com’s Perimeter of a Square – One of the fastest ways to determine the perimeter of a square.

OnlineMSchool.com’s Perimeter of a Square – With this calculator, you can use two different ways to determine the perimeter of a square.

**1.6 – Triangles**

**1.6.1 – Multiple Functions**

1728.org’s 30 60 90 and 45 45 90 Triangle Calculator – While this calculator may seem a bit complicated at first glance, if you take a closer look at the Instructions, you won’t have any problems using it.

1728.org’s Triangle Tester – Besides being used to determine the length of the third side of the triangle, this calculator is also fun. After all, just insert the values you know and play with the diagram.

Calculator.net’s Triangle Calculator – This is another useful calculator that you can use. It also provides you good tutorials about the sides and angles of a triangle.

EasyCalculation.com’s Triangle Calculator – With just one calculator, you’ll be able to determine the area of triangle SAS, the area of an equilateral triangle, the perimeter, and the area as well.

OsterMiller.org’s Triangle Calculator – All you need to do is to insert the 3 values that you know about the triangle in the diagram and this calculator will determine the other 3.

**1.6.2 – Area**

Basic-Mathematics.com’s Heron’s Formula Calculator – This is a great calculator to know more about the Heron formula. It will determine the area of the triangle.

MathWorksheetsGo.com Area of a Triangle Calculator – This is a great calculator for visual users. It will easily determine the triangle’s area.

Online-Calculators.co.uk’s Area of a Triangle – This calculator allows you to use two different ways to calculate the area of the triangle.

**1.6.3 – Equilateral Triangles**

CalculatorSoup.com’s Equilateral Triangles Calculator – Besides tutorials about equilateral triangles and even a diagram, you’ll be able to determine the altitude, the area, the perimeter, and the length of a side of the triangle.

RechneOnline.de’s Equilateral Triangle Calculator – This is a helpful calculator when you need to determine the area or the perimeter of a triangle.

**1.6.4 – Irregular Triangles**

HandyMath.com’s Irregular Triangle Calculator – Featuring an irregular triangle diagram, this calculator will help you analyze it.

**1.6.5 – Isosceles Triangles**

CalculatorSoup.com’s Isosceles Triangle Calculator – When you need to determine the altitude, area, perimeter, and semi-perimeter of an isosceles triangle, you just need to insert the two sides. In addition, this page also provides you with information about the formulas as well as tutorials.

**1.6.6 – Scalene Triangles**

EasyCalculation.com’s Scalene Triangle Area and Perimeter Calculator – All you need to do is to insert the side lengths of the triangle and you’ll be able to determine its area and the perimeter.

**#2: Advanced Plane Geometry**

**2.1 – Annulus**

**2.1.1 – Multiple Functions**

CalculatorSoup.com’s Annulus Calculator – This is one of the best calculators that you have that allow you to determine the radii, the circumference, and well as the area of an annulus. In addition, you can also check their tutorials, examples, and formulas.

CleaveBooks.co.uk’s The Annulus Calculator – This is one of the best calculators that you have when you want to use the calculations of an annulus in the real world.

MathCelebrity.com’s Annulus Calculator – When you want to determine the area of the annulus, all you need to do is to input the small radius and the large radius.

**2.1.2 – Area**

CSGNetwork.com’s Annulus Area Calculator – This is a great calculator especially if you’re trying to learn a bit more about annuli.

Convertxy.com’s Areas and Properties of Annulus Rings – With a clean design, this online calculator allows you to determine the area, the thickness (or width), the inner radius, the outer radius, among more of an annulus.

OnlineConversion.com’s Area of Annulus Calculator – In order to determine the area and the circumference of the annulus, you just need to enter the outer and the inner radius.

**2.2 – Kites**

**2.2.1 – Multiple Functions**

1728.org’s Kite Calculator – When you want to determine the perimeter, area, side length, or other measures of kites, you just need to choose the button that represents the data that you have. In addition, you’ll be able to see a diagram of the kite as well as you can access tutorials about kites that can help you improve your skills.

CalcTool.org’s Kite Calculator – This easy to use calculator can be used to determine the kite’s angles, side lengths, and area. In addition, it also features a detailed diagram that can help quite a bit especially if you’re a visual person.

EasyCalculation.com’s Kite Calculator – One of the main advantages in using this calculator is that it will show you three different functions: you’ll be able to determine the area of the kite using trigonometry, the area of the kite, and even its perimeter.

MeraCalculator.com’s Kite Calculator – This calculator uses two different methods to calculate the area of the kite: the trigonometric method and the diagonal method.

NCalculators.com’s Kite Calculator – In case you want to discover the area of the kite using the diagonal method only, this is the calculator that you need to use.

**2.2.2 – Area**

Had2Know.com’s Kite Area Calculator – When you want to determine the area of a kite, you can do it by using three different methods.

TutorVista.com’s Area of a Kite Calculator – When you want to fully understand the diagonal method to determine the area of the kite, just follow the step-by-step instructions of this calculator.

**2.3 – Parallelograms**

**2.3.1 – Multiple Functions**

1728.org’s Parallelogram Calculator – This is one of the best calculators that you can use to find aspects of squares, rhombi, and rectangles. All you need to do is to choose the shape you want and proceed from there.

CalcResult.com’s Parallelogram Calculator – When you want to determine all the dimensions of a parallelogram, you can do so using the diagram that is used by this free online calculator.

CalculatorSoup.com’s Parallelogram Calculator – With this calculator, you can easily determine the parallelogram area, perimeter, height, diagonals, corner angles, and side angles. In addition, you can also learn more about these shapes.

EndMemo.com’s Parallelogram Calculator – Featuring parallelogram formulas and a diagram, you will be able to determine its long diagonal, short diagonal, perimeter, and the area as well.

Had2Know.com’s Parallelogram Calculator – This calculator features two different diagrams and besides good tutorials, it also allows you to easily calculate the parallelogram’s area.

PlanetCalc.com’s Parallelogram Calculator – With this calculator, you will be able to easily discover the adjacent angles and the diagonals of the parallelogram.

Rechneonline.de’s Parallelogram Calculator – With this calculator, you can easily discover some of the most important properties of parallelograms.

**2.3.2 – Area**

Convertxy.com’s Area of a Parallelogram Calculator – This is a simple calculator that allows you to discover the area of a parallelogram.

Keisan.Casio.com’s Area of a Parallelogram Calculator – When you’re trying to determine the area or the perimeter of a parallelogram, you just need to insert one angle, one side length, and the base length.

MiniWebTool.com’s Area of a Parallelogram Calculator – When you are only trying to determine the area of a parallelogram without any diagram or tutorials, this is the calculator that you’ve been looking for.

NCalculators.com’s Area of a Parallelogram Calculator – When you want to calculate the area of a parallelogram, just enter the width and length of the parallelogram. This calculator also displays a diagram as well as some good tutorials.

OnlineMSchool.com’s Area of a Parallelogram Calculator – Just insert each one of the values that you have about the parallelogram by using the drop-down menu, and you’ll get its area.

TutorVista.com’s Area of a Parallelogram Calculator – Showing the formula used as well as a parallelogram diagram, this calculator will determine its area based on the base value and height that you provide.

**2.3.3. – Perimeter**

AJDesigner.com’s Perimeter of a Parallelogram Calculator – When you’re simply looking to determine the perimeter of a parallelogram this simple to use calculator is perfect.

**2.4 – Rhombus**

**2.4.1 – Multiple Functions**

CalculatorSoup.com’s Rhombus Calculator – Besides displaying a rhombus diagram, formulas, constraints, and tutorials, you just need to have two variables in order to determine the rhombus ‘s area, perimeter, height, diagonals, corner angles, and side lengths.

EasyCalculation.com’s Rhombus Calculator – When you want to calculate the area of a rhombus, you can use one of the three methods provided. In addition, you can also determine the perimeter of the rhombus.

MeraCalculator.com’s Rhombus Calculator – This is another easy to use calculator to determine both the area as well as the perimeter of the rhombus.

NumberEmpire.com’s Rhombus Calculator – When you want to improve your knowledge about rhombus besides determining its perimeter and area, this is one of the best calculators that you can use.

OnlineMSchool.com’s Rhombus Calculator – Easy to use calculator to determine the area of a rhombus. In addition, make sure that you also check out the diagram as well as rhombus’ properties.

RechnerOnline.de’s Rhombus Calculator – When you want to determine the diagonals, area or perimeter of a rhombus, all you need to do is to enter one angle and a side length.

**2.4.2 – Area**

Calculator.Swiftutors.com’s Area of a Rhombus Calculator – If you like to visualize things, you’re going to love this online calculator, After all, it is based on colors and allows you to determine the rhombus’ area.

Keisan.Casio.com’s Area of a Rhombus Calculator – This is a simple to use calculator that allows you to determine the vertex angles, the perimeter, and the area of the rhombus.

Math-Prof.com’s Area of a Rhombus Calculator – In order to calculate the area of the rhombus, you are required to enter its width and length on the diagram.

NCalculators.com’s Area of a Rhombus Calculator – One of the best things about this free online calculator is that you’ll be able to determine the area of the rhombus using two different methods.

TutorVista.com’s Area of a Rhombus Calculator – While the main goal of this online calculator is to help you determine the area of the rhombus, it also provides you with great examples as well as step-by-step instructions.

**#3: Basic Solid Geometry**

**3.1 – Cones**

**3.1.1 – Multiple Functions**

CalculatorSoup.com’s Right Circular Cone Calculator – With this calculator and when you know just two variables, you’ll easily determine the cone’s total surface area, the base surface area, the lateral surface area, the value, the slant height, the height, and the radius. In addition, you may also want to take a look at their tutorials.

CleaveBooks.co.uk’s Cone Calculator – This is a great free calculator that helps you determine the volume, slant height, and the base radius of a cone.

EasyCalculation.com’s Cone Calculator – This free online calculator is simply amazing. It allows you to use four different functions in order to determine the cone’s total surface area, the curved surface area, and the slant height.

NCalculators.com’s Cone Calculator – One of the best things about this calculator is that it displays a detailed cone diagram. In addition, you can easily determine the cone’s slant height, total area, and the volume.

PlanetCalc.com’s Cone Calculator – When you’re looking for the maximum information about cones this is where you’re going to find it. From images to formulas, not forgetting about calculations and tutorials.

RechneOnline.de’s Cone Calculator – Perfect when you want to determine the slant height of the cone, it’s surface area or it’s volume.

RKM.com.au’s Cone Calculator – Great calculator to determine the surface area and the volume of any cone. In addition, you’ll be able to see the formulas used as well as a complete diagram.

**3.1.2 – Surface Area**

MiniWebTool.com’s Surface Area of a Cone Calculator – When you don’t simply want to calculate the surface area of the cone but you also want to determine it using different formulas, make sure that you check out this calculator.

TutorVista.com’s Surface Area of a Cone Calculator – Featuring a lot of examples, this is a great calculator that will help you determine the surface area of a cone.

**3.1.3 – Volume**

AJDesigner.com’s Volume of a Cone Calculator – One of the simplest and easiest to use calculators to determine the volume of a cone.

Basic-Mathematics.com’s Volume of a Cone Calculator – All you need to determine the volume of the cone is to simply enter its height and radius.

KylesConverter.com’s Volume of a Cone Calculator – When you are also looking to understand more about determining the volume of a cone, this is one of the best calculators that you can try.

Online-Calculators.co.uk’s Volume of a Cone Calculator – Besides explaining how to determine the volume of the cone, they also provide you with the result in a fast way.

TutorVista.com’s Volume of a Cone Calculator – With a lot of examples and great instructions, discover how you can easily calculate the volume of a cone.

**3.2 – Cubes**

**3.2.1 – Multiple Functions**

1728.org’s Cube Area and Volume Calculator – This calculator will be able to determine the cube’s volume, face diagonal, perimeter, the area of one face, and the entire area. In addition, you can see its diagram.

CalculatorSoup.com’s Cube Calculator – This is a very complete calculator that allows you to calculate the volume, surface area, solid diagonal, face diagonal, and side length of the cube beside providing you with a good diagram and all the formulas.

EasyCalculation.com’s Cube Calculator – This online calculator allows you to perform three different functions: the diagonal, the surface area, and the volume. All you need to know is the side length of the cube.

RechnerOnline.de’s Cube Calculator – This is another good calculator that allows you to determine the volume and the surface area of a cone, among others.

**3.2.2 – Surface Area**

Basic-Mathematics.com’s Surface Area of a Cube Calculator – This is an extremely simple to use calculator. You just need to enter the side lenght of the cube to determine the surface area.

MiniWebTool.com’s Surface Area of a Cube Calculator – Another simple to use calculator that just requires you to insert the edge lenngth of the cube.

NCalculators.com’s Area of a Cube Calculator – This calculator provides you with the formula as well as with tutorials to determine the the area of a cube.

OnlineConversion.com’s Surface Area of a Cube Calculator – Using a large cube diagram, this calculator is easy to use.

TutorVista.com’s Surface Area of a Cube Calculator – If you’re into visualizations, this is the right calculator for you. You can use the different examples to determine the surface area of a cube.

**3.2.3 – Volume**

Basic-Mathematics.com’s Volume of a Cube Calculator – In order to get the volume of the cube, you just need to enter the length of one side.

Keisan.Casio.com’s Volume of a Cube Calculator – This is one of the best calculators that you can use in visual terms. It features a labelled diagram and also includes the cube volume formula.

MiniWebTool.com’s Volume of a Cube Calculator – In order to this calculator to determine the volume of the cube, you just need to enter the edge length.

NCalculators.com’s Volume of a Cube Calculator – This is a great resource to discover the formula as well as to check their tutorials about the cube’s volume.

Online-Calculators.co.uk Volume of a Cube Calculator – Besides featuring a diagram, this is a very fast calculator to provide you with the volume of a cube.

TutorVista.com’s Volume of a Cube Calculator – Go through the different examples and the step-by-step instructions to determine the volume of your cube in an easy and fast way.

**3.3 – Cylinders**

**3.3.1 – Multiple Functions**

1728.org’s Horizontal Cylindrical Tank Calculator – This is the right calculator when you’re trying to determine the partially-filled horizontal cylinders. In addition, it’s also a great source of instructions.

1728.org’s Vertical Cylinder Tank Calculator – This is the right calculator when you’re trying to determine the partially-filled horizontal cylinders. In addition, it’s also a great source of instructions.

CalculatorSoup.com’s Cylinder Calculator – With this calculator, you can easily determine the cylinder’s total surface area, base surface area, top surface area, lateral surface area, volume, height, and radius by only two known variables.

EasyCalculation.com’s Cylinder Calculator – This is a simple to use calculator that will help you determine the cylinder total surface area, the curved surface area, and volume. All you need to insert is the hight and radius of the cylinder.

EndMemo.com’s Right Circular Cylinder Calculator – When you want to find the different properties of the cylinder, this is a great tool. You can easily use it to calculate its curved surface area, its total surface area, and its volume.

NCalculators.com’s Cylinder Calculator – Besides allowing you to determine the cylinder’s lateral surface area, base surface area, the total surface area, and the volume, this calculator also feature a detailed diagram.

WebMath.com’s Find Out Things About Cylinders – In order to calculate the cylinder’s volume, area, diameter or radius, just use the drop-down menu. You can also take the opportunity and check their tutorials.

**3.3.2 – Surface Area**

Basic-Mathematics.com’s Cylinder Surface Area Calculator – In order to this calculator determine the surface area of the cylinder, you just need to insert its height and radius.

MiniWebTool.com’s Surface Area of a Cylinder Calculator – Besides this calculator determines the area of the cylinder, you can also use it to learn more about the formula used.

**3.3.3 – Volume**

Basic-Mathematics.com Volume of a Cylinder Calculator – With this simple calculator, just enter the cylinder height and radius in order to determine its volume.

KylesConverter.com Volume of a Cylinder Calculator – This calculator uses chalkboard-style diagrams that allow you to easily understand how you can determine the volume of a cylinder.

Online-Calculators.co.uk’s Volume of a Cylinder Calculator – This is one of the fastest calculators that you can use when you just want to determine the volume of a cylinder.

OnlineConversion.com’s Volume of a Cylindrical Tank Calculator – With this free online calculator, you can easily discover the cylinder’s volume, length, diameter, and radius when you just know two values.

TutorVista.com’s Volume of a Cylinder Calculator – Great collection of examples as well as explanations to determine the volume of a cylinder.

**3.4 – Pyramids**

**3.4.1 – Multiple Functions**

1728.org’s Right Regular Pyramid – By only inserting the base length and side and the number of sides of a pyramid, this calculator will help you determine its slant height, base area, and volume.

CalculatorSoup.com’s Square Pyramid Calculator – This is one of the best tools that you can use to calculate a pyramid’s total surface area, volume, length, lateral edge, side length, slant height, and height. In addition, you should also consider checking out their tutorials as well as the diagram.

EasyCalculation.com’s Pyramid Calculator – One of the best things about this calculator is that it allows you to easily determine the volume, the surface area, and the base area for many different types of pyramids. These include the regular hexagonal, the regular pentagonal, the regular square, and the regular triangular pyramids.

Keisan.Casio.com’s Square Pyramid Calculator – You can use this calculator to easily discover the pyramid’s surface area and volume. This calculator also includes a labeled diagram.

Math-Prof.com’s Area & Volume of a Square Pyramid Calculator – One of the things that make this calculator stand out is that you’ll need to enter your data directly on the square pyramid diagram.

MeraCalculator.com’s Pyramid Calculator – This calculator will help you determine the area of different types of pyramids including pentagonal, square, triangular, among others.

NCalculators.com’s Pyramid Calculator –When you want to discover a pyramid’s total surface area or volume, you can use this calculator. You’ll also get a labeled diagram as well as some good tutorials about pyramids.

**3.4.2 – Height**

EasyCalculation.com’s Height of a Regular Pyramid Calculator – When you want to discover the height of the pyramid, you just need to enter the base side length, the number of sides, and the lateral edge.

EasyCalculation.com’s Slant Height of a Pyramid Calculator – This is a very easy and quick calculator that you can use to determine the slant height of a pyramid. Just insert the base and the height of the pyramid.

EasyCalculation.com’s Slant Height of a Square Pyramid Calculator – This is a very easy and quick calculator that you can use to determine the slant height of a square pyramid. Just insert the side length and height of the pyramid.

**3.4.3 – Surface Area**

Basic-Mathetics.com’s Area of a Square Pyramid Calculator – Featuring a labeled diagram, this calculator is very easy to use.

CalcuNation.com’s Square Pyramid Surface Area Calculator – This calculator stands out because it explains all you need to know about the square pyramid surface area formula.

EasyCalculation.com’s Lateral Surface Area of a Regular Pyramid using Slant Height Calculator – This is a simple and easy to use calculator to determine the lateral surface of a pyramid.

EasyCalculation.com’s Total Surface Area of a Regular Pyramid Calculator – This is a simple and easy to use calculator to determine the total surface of a pyramid.

OnlineConversion.com’s Surface Area of a Rectangular Pyramid Calculator – In order to determine the surface area of a rectangular pyramid using this free online calculator, just insert the height and the edge lengths.

TutorVista.com’s Surface Area of a Pyramid Calculator – Complete tool that includes examples, tutorials and even a detailed diagram of a pyramid.

**3.4.4 – Volume**

EasyCalculation.com’s Volume of a Regular Pyramid Calculator – This is a simple calculator that allows you to determine the volume and the base area of the pyramid by inserting the semi-perimeter, the height, and the radius values.

MiniWebTool.com’s Volume of a Pyramid Calculator – Featuring a labeled pyramid diagram, this is a calculator that is easy to use and has a clean design.

TutorVista.com’s Volume of a Pyramid Calculator – Great collection of examples, tutorials, and diagrams of square and triangular based pyramids.

**3.5 – Rectangular Prisms**

**3.5.1 – Multiple Functions**

1728.org’s Rectangular Prism (Solid) Area and Volume Calculator – With this calculator, you just need to add the rectangular prim’s height, width, and length to determine its total area, the area of its faces, and its volume.

1728.org’s Rectangular Tank Calculator – This is a great calculator to use when you want to discover the volume of a partially-filled rectangular tank.

1728.org’s Right Regular Prism Calculator – With this calculator, you just need to add the regular prism’s height, side length, and the number of sides to determine its base perimeter and area.

CalculatorSoup.com’s Rectangular Prism Calculator – When you already know 3 variables, you’ll easily determine the prism’s volume, surface area, diagonal, and height with this calculator. You can also take a look at their tutorials.

EasyCalculation.com’s Prism Calculator – With this calculator, you can easily determine the diagonal, the volume, the surface area, the base perimeter, and the perimeter of many different kinds of prisms.

EasyCalculation.com’s Rectangular Prism/Box Calculator – With this calculator, you can easily determine the volume and surface area of a rectangular prism. You just need to enter its height, length, and width.

NCalculators.com’s Rectangular Cuboid Calculator – This is an easy way to calculate the surface area, volume or perimeter. In addition, you’ll also be able to see a diagram.

WebMath.com’s Find Out Things About a Box Calculator – When you’re interested in knowing all about boxes, this is the right calculator for you. Just determine the surface area or the volume by adding the height, width, and length of a box.

**3.5.2 – Surface Area**

Basic-Mathematics.com’s Surface Area of a Prism Calculator – In order to get the surface area of the prism, just enter its height, width, and length.

MiniWebTool.com’s Surface Area of a Rectangular Prism Calculator – This is an extremely simple to use calculator to determine the surface area of a rectangular prism.

TutorVista.com’s Surface Area of a Rectangular Prism Calculator – Great collection of example problems, diagrams, and tutorials about rectangular prisms.

**3.5.3 – Volume**

Basic-Mathematics.com’s Volume of a Box Calculator – Great calculator when you want to know the volume of a box quickly. You just need to add its height, width, and length.

KylesConverter.com’s Volume of a Rectangular Prism Calculator – With this tool, you will get to learn more about rectangular prisms with the use of chalkboard-style diagrams.

MiniWebTool.com’s Volume of a Rectangular Prism Calculator – One of the easiest calculators that you can use to determine the volume of a rectangular prism.

OnlineMSchool.com’s Volume of a Rectangular Prism Calculator – Besides helping you determine the volume of a rectangular prism, this tool also provides you some useful tutorials.

TutorVista.com’s Volume of a Rectangular Prism Calculator – This is a good collection of example problems, tutorials, and instructions on how to determine the volume of a rectangular prism.

**3.6 – Spheres**

**3.6.1 – Multiple Functions**

CalculatorSoup.com’s Sphere Calculator – This is a good calculator that you can use to determine the circumference, the volume, surface area, and radius of a sphere when you only know one variable.

EasyCalculation.com’s Sphere Calculator – With this calculator, you will immediately determine boy the curved surface area as well as the volume. You just need to enter the radius of the sphere.

EndMemo.com’s Sphere Calculator – Depending on the values that you know, you can use this simple calculator to help you calculate the sphere’s volume, area, and radius.

HandyMath.com’s Sphere Calculator – Use this calculator when you need to discover the volume and the diameter of a sphere.

MeraCalculator.com’s Sphere Calculator – Another great calculator that allows you to easily determine the volume and the area of a sphere. You can also check their example as well as the different sphere formulas.

NCalculators.com’s Sphere Calculator – This calculator is another great option to discover the surface area and the volume of a sphere. In addition, you can also check their labeled diagram as well as their tutorials.

NumberEmpire.com’s Sphere Calculator – Depending on the values that you already know, you can use this calculator to determine the diameter, the radius, the volume and the area of the sphere.

RKM.com.au’s Circle Sphere Calculator – This is one of the best calculators on the market. After all, with just one value, it lets you determine the sphere’s volume, surface, circle area, circumference, diameter, and radius.

TutorVista.com’s Sphere Calculator – You can use this calculator to determine the surface area the circumference, the diameter, and the volume of a sphere. In addition, you can also check their step-by-step instructions as well as a labeled diagram.

WebMath.com’s Find Things Out About Right Spheres – Just enter the data and choose what you want to determine – the volume, the area, the diameter, or the radius of the sphere.

**3.6.2 – Surface Area**

Basic-Mathematics.com’s Surface Area of a Sphere Calculator – In order to determine the surface area of the sphere, you just need to add its radius.

MinWebTool.com’s Surface Area of a Sphere Calculator – Besides determining the surface area of a sphere, this calculator also shows you the formula used.

**3.6.3 – Volume**

1728.org’s Partially-Filled Sphere Calculator – This is one of the most complete tools that you have to determine the partially-filled sphere value.

Basic-Mathematics.com’s Volume of a Sphere Calculator – All you need to do is to insert the radius of a sphere to discover its volume.

KylesConverter.com’s Volume of a Sphere Calculator – This calculator uses chalkboard-style diagrams to teach you more about how to determine the volume of a sphere.

MiniWebTool.com’s Volume of a Sphere Calculator – This is one of the easiest calculators that you can use to determine a sphere’s volume.

OnlineConversion.com’s Volume of a Sphere Calculator – This calculator is simple and easy to use and it also displays a labeled diagram as well as the formula.

**#4: Advanced Solid Geometry Calculators**

**4.1 – Annulus Volume**

FormLoop.com’s Annular Volume Calculator Widget – With this easy to use calculator, you just need to insert the data.

**4.2 – Capsules**

**4.2.1 – Multiple Functions**

Capsule Volume, Surface Area and Circumference Calculation – All you need to do is to add the side length and the radius of the capsule, and this simple calculator will return you the capsule’s volume, surface area, and circumference.

CalculatorSoup.com’s Capsule Calculator – This calculator will help you determine the capsule’s circumference, volume, surface area, side length, and radius when you only know two variables. You can also check the formulas, tutorials, and the diagram of a capsule.

EasyCalculation.com’s Capsule Calculator – With this simple calculator, you can determine the capsule’s circumference, surface area, and volume. You just need to enter its side length and radius.

Had2Know.com’s Capsule Calculator – Featuring an example problem, tutorials, and formulas, you can use this calculator to determine the surface area and the volume of a capsule.

RechneOnline.de’s Capsule Calculator – In order to determine the capsule’s volume and surface area with this calculator, you just need to enter the cylinder height and its radius.

**4.2.2 – Volume**

WebConversionOnline.com’s Volume of a Capsule Calculator – All you need to do is to enter the capsule’s height and radius. You can also use this tool for other shapes.

**4.3 – Conical Frustums**

**4.3.1 – Multiple Functions**

1728.org’s Right Circular Cone & Cone Frustum Calculator – Great collection of formulas, diagrams, and tutorials about cones and frustums.

CalculatorSoup.com’s Conical Frustum Calculator – When you just have the conical frustum’s two radii and one other variable, this calculator will help you determine its total surface area, lateral surface area, volume, slant height, and height.

EasyCalculation.com’s Conical Frustum Calculator – This calculator will help you determine the conical frustum’s total surface area, base surface area, top surface area, lateral surface area, slant height, and volume, You just need to enter its height, radius1, and radius2.

Had2Know.com’s Surface Area and Volume of a Conical Frustum Calculator – It includes a sample problem as well as some good tutorials.

**4.3.2 – Volume**

Aqua-Calc.com’s Volume of a Frustum Calculator – Great collection of formulas and tutorials.

Calculator.Swiftutors.com’s Truncated Cone Volume Calculator – Besides high-quality tutorials, this calculator also uses a color-coded version of the formula.

Keisan.Casio.com’s Volume of a Circular Truncated Cone Calculator – This is a simple calculator that you can use to determine the surface area, the lateral surface area, and the volume of a truncated cone.

Volume Of A Cone Calculator – This is a simple calculator that requires you to add the radius and height of the cone.

**4.4 – Hemispheres**

CalculatorSoup.com’s Hemisphere Calculator – When you only know one variable, this calculator will help you determine the total surface area, the curved surface area, the volume, the circumference, and the radius of the hemisphere.

EasyCalculation.com’s Hemisphere Calculator – With this simple to use calculator, you will easily discover the hemisphere’s total surface area, curved surface, and volume.

MeraCalculator.com’s Hemisphere Calculator – Besides allowing you to calculate the volume, the surface area and the curved surface area of the hemisphere, you’ll also get an example.

NCalculators.com’s Hemisphere Calculator – When you know the radius, you can use this calculator to determine the hemisphere’s volume and surface area.

TutorVista.com’s Hemisphere Calculator – Great collection of sample problems, formulas, and instructions.

**4.5 – Tubes**

**4.5.1 – Multiple Functions**

CalculatorSoup.com’s Tube Calculator –This calculator allows you to easily determine the tube’s inner surface area, inner circumference, outer surface area, outer circumference, among others. All you need to do is to insert three of the following values: height, circumference, wall thickness, and radii.

HandyMath.com’s Volume, Diameter, and Length of a Cylindrical Tube Calculator – With this calculator, you will get the tube’s length, diameter, and volume.

Keisan.Casio.com’s Volume of a Hollow Cylinder Calculator – This calculator allows you to determine the surface area and the lateral surface area of a hollow cylinder.

OnlineConversion.com’s Surface Area of a Tube Calculator and OnlineConversion.com’s Volume of a Cylinder Pipe Calculator – These are another two calculators that you can use easily.

**4.5.2 – Volume**

EasyCalculation.com’s Cylindrical Pipe Volume Calculator – With this calculator, you can get the cylindrical volume by entering the height, inner radius, and outer radius.

GE Life Sciences Volume Calculator – This is a simple online calculator that allows you to determine the volume of the tube in ml. All you need to add is the inner diameter and the length of the tube.