Surface Area Calculator

Use our free surface area calculator to compute the surface area of common 3D shapes. Select a shape and enter dimensions.

Math

Shape

Dimension A

Dimension B

Dimension C

Formula

Find the surface area of common 3D geometric shapes.

Depends on shape

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Select a 3D shape.
2Enter the dimensions.
3Click Calculate.

Examples

Cube with side 5

1.Side = 5.
2.SA = 6 x 25 = 150 units².

Result: 150.0000 units²

Sphere with radius 7

1.Radius = 7.
2.SA = 4π x 49 ≈ 615.75 units².

Result: 615.7522 units²

Frequently Asked Questions

Cube, rectangular prism, sphere, cylinder, and cone.

A = 4πr².

A = 2πr(r + h).

A = πr(r + l), where l is the slant height.

A = 2(lw + wh + lh).

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CalculateMe Team

Last updated: 2026-07-14

Surface Area Calculator

Formula

How It Works

Examples

Cube with side 5

Sphere with radius 7

Frequently Asked Questions

What shapes are supported?

What is the formula for a sphere?

What is the formula for a cylinder?

What is the formula for a cone?

What is the formula for a rectangular prism?

Related Calculators

Surface Area Calculator

Formula

How It Works

Examples

Cube with side 5

Sphere with radius 7

Frequently Asked Questions

What shapes are supported?

What is the formula for a sphere?

What is the formula for a cylinder?

What is the formula for a cone?

What is the formula for a rectangular prism?

Related Calculators