Sphere
Radius
in
Surface area
in²
Cylinder
Radius
in
Height
in
Surface area
in²
Cube
Edge
in
Surface area
in²
Cone
Radius
in
Height
in
Surface area
in²
Rectangular cuboid
Width
in
Length
in
Height
in
Surface area
in²

Surface Area Calculator

This surface area calculator calculates the surface area of a sphere, cube, cylinder, cone and rectangular cuboid.

This surface area calculator helps you find the area of the most common three-dimensional solids. If you ever wondered, for example, what is the area of a cube, this calculator is here to help you. In this article, you can find the formulas for surface area of a sphere, cube, cylinder, cone and rectangular cuboid. We will also explain how to calculate the surface area of a sphere as an example.

Formula for the surface area of...

Our surface area calculator can find the surface area of five different solids. The formula used depends on the type of the solid.

  • Surface area of a sphere: A = 4πr², where r stands for the radius of the sphere.
  • Surface area of a cube: A = 6a², where a is the side length.
  • Surface area of a cylinder: A = 2πr² + 2πrh, where r is the radius and h is the height of the cylinder.
  • Surface area of a cone: A = πr² + πr√(r² + h²), where r is the radius and h is the height of the cone.
  • Surface area of a rectangular cuboid: A = 2(ab + bc + ac), where a, b and c are the lengths of three sides of the cuboid.

How to calculate the surface area of a sphere?

If you want to find the surface area of a sphere, you need to follow these steps:

  1. Determine the radius of the sphere. We can assume a radius of 10 cm.
  2. Input this value into the formula A = 4πr².
  3. Calculate the result: A = 4π * 10² = 1256 cm².
  4. You can also use this surface area calculator to find the radius of the sphere, knowing its area.

Other considerations

The units of surface area are always square units of length. For example, you can express it in cm², in², ft², m², but also in acres and hectares.

If you want to find the volume of any of these solids, use our volume calculator to do it.

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Surface Area Calculator
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