Surface Area Calculator

Calculate total surface area for common 3D shapes.

Last updated: June 2026 | By Patchworkr Team

Side Length

Side is required.

Cube: 6s^2. Sphere: 4pi r^2. Cylinder: 2pi r(r + h). Cone: pi r(r + l), with l = sqrt(r^2 + h^2).

Live Results

Enter valid dimensions to see results.

Formulas

Cube: SA = 6s^2

Sphere: SA = 4pi r^2

Cylinder: SA = 2pi r(r + h)

Cone: SA = pi r(r + l), where l = sqrt(r^2 + h^2)

Example: sphere with radius 4

Surface area: 4pi(4^2) = 64pi about 201.06192983

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