Surface Area Calculator
Calculate surface area of a cube or sphere.
Enter a dimension above.
How to Use the Surface Area Calculator
Select or enter the dimensions required for the 3D shape and calculate its total exterior surface area.
Practical Example
A cube with side length 4 has six square faces, so its total surface area is 96 square units.
Factors That Affect the Result
The correct formula depends on the selected shape and whether all required faces are included. Use consistent units for every dimension.
Frequently Asked Questions
Is surface area the same as volume?
No. Surface area measures the exterior covering; volume measures internal space.
What units are returned?
Squared units based on the dimensions entered.
Can I mix units?
No. Convert all measurements to one unit first.