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Cube Surface Area Calculator

Result

Calculated result Ready Change any value to calculate instantly.
↗ Math

Cube Surface Area Calculator — free online calculator.

Formula

Surface area = 6 × edge².
  • Enter the geometric dimensions indicated below. Dimensions must use compatible units; the output is an area in squared units unless otherwise stated.
  • The main inputs are Edge length. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Cube Surface Area

Inputs
  • Edge length: 5

Example inputs: Edge length = 5. Calculated result: Area: 150.0000 square units.

Sample result: Calculating…

Frequently asked questions

What does the Cube Surface Area calculate?

A cube has six congruent square faces.

Which values should I enter?

Enter Edge length using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Surface area = 6 × edge²..

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 6, 2026