QuickFreeTools

Online Surface Area Calculator

Surface area of cube (side), sphere (r), cylinder (r, h), or cone (r, h). Select shape and enter dimensions.

Frequently Asked Questions

What shapes are supported?
Cube (6s²), sphere (4πr²), cylinder (2πr² + 2πrh), cone (πr² + πr√(r²+h²)).
What units should I use?
Use any consistent units (e.g. cm). The result is in square units of that measure.

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