Rectangular Box Volume Calculator

Enter length, width, and height to find the volume of a rectangular box, plus its surface area and space diagonal.

Input

Enter the length, width, and height to calculate the volume, surface area, and space diagonal of a rectangular box.

Length a

Width b

Height c

Volume

Surface area

108

Space diagonal

7.81025

Use the same length unit for all three edges. The volume is in cubic units and the surface area in square units.

The volume of a rectangular box equals length a times width b times height c. Enter all three edges in the same unit.
The surface area is 2(ab + bc + ca), the total of the six rectangular faces.
The space diagonal connecting the two farthest corners has length sqrt(a² + b² + c²).
If you enter lengths in cm, the volume is in cm³ and the surface area in cm². Keep all units consistent.

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