Surface Area Calculator

Surface area of 3D shapes — cube, box, sphere, cylinder, cone.

Calculator Numbers & Math Updated Apr 19, 2026
Shape
Area

Formulas

Cube
6s²
Box
2(LW + LH + WH)
Sphere
4πr²
Cylinder
2πr(r + h)
Cone
πr(r + √(r²+h²))

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