About the Surface Area Calculator
A free tool for finding the total surface area of common 3D shapes.
What it is
The Surface Area Calculator covers seven common 3D shapes โ cube, rectangular prism, sphere, cylinder, cone, square pyramid, and triangular prism. Pick a shape, enter its dimensions, and get the total surface area along with the formula used.
Features
Seven shapes
All the common 3D solids covered in geometry coursework.
Formula shown
See the exact formula used for each shape.
Unit-agnostic
Enter dimensions in any consistent unit.
Instant, private
Runs entirely in your browser. No data is sent anywhere.