Surface Area Calculator

Calculate total, lateral, and base surface area of 3D geometric solids including spheres, cylinders, cones, rectangular boxes, cubes, and capsules.

Surface Area in Three Dimensions

Surface area is the total area that the surface of an object occupies in three-dimensional space. It represents the total amount of 2D material required to wrap or paint the external boundary of a solid.

Frequently Asked Questions

What is the surface area of a sphere?

Archimedes proved that the surface area of a sphere of radius r is exactly equal to four times the area of its great circle: SA = 4πr².

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