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Rectangular Prism Calculator

Math
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Calculates the volume, surface area, or diagonal length of a rectangular prism (box).

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Length, Width, and Height in the units shown.

Step 2

Read Diagonal, Surface Area, and Volume in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Small Box

Length: 5 cm; Width: 3 cm; Height: 2 cm

Diagonal: 6.164414003 cm; Surface Area: 62 cm²; Volume: 30 cm³

Medium Box

Length: 10 cm; Width: 5 cm; Height: 3 cm

Diagonal: 11.5758369 cm; Surface Area: 190 cm²; Volume: 150 cm³

Large Box

Length: 20 cm; Width: 10 cm; Height: 5 cm

Diagonal: 22.91287847 cm; Surface Area: 700 cm²; Volume: 1,000 cm³

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