Cube Surface Area Calculator
Calculate the total surface area of a cube.
How to Use the Cube Surface Area Calculator
Enter the cube side length to calculate total surface area.
Practical Example
A cube with side length 5 has six faces of 25 square units each, for a total surface area of 150 square units.
Factors That Affect the Result
The formula assumes all edges are equal. If length, width and height differ, use a rectangular prism calculator instead.
Frequently Asked Questions
What is the formula?
Surface area equals 6s².
Is a cube a rectangular prism?
Yes, with all three dimensions equal.
What units are returned?
Squared units.
Related Tools
- Rectangular Prism Surface Area Calculator
- Surface Area Calculator
- Prism Volume Calculator
- Cubic Inches Calculator
- Volume Calculator
Checking Cube Surface Area
A cube has six identical square faces, so total surface area is 6s², where s is the side length. This differs from cube volume, which is s³.
Surface area is useful when estimating paint, wrapping, coating or exposed material. Measure the side in one unit and remember that the result is expressed in square units. If a real object has openings, overlaps or hidden faces, subtract or add those areas separately rather than relying only on the ideal cube formula.