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Area, Perimeter, Volume, and Surface Area Calculator

Find common rectangle and rectangular-box measures.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

Rectangle area is length times width; a rectangular box's surface area totals its six faces.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

A 2 by 3 rectangle has area 6 and perimeter 10.

Limitations

This calculator is for educational use; verify important work independently.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.