How to use this calculator
Select a 3D shape and enter its dimensions to calculate total outside surface area.
Formula
Surface area is the total area of every exposed face or curved surface.
Example
A cube with side length 4 has surface area 6 × 4² = 96 square units.
Frequently asked questions
Is surface area the same as volume?
No. Surface area measures the outside in square units; volume measures capacity in cubic units.