What is the Rectangular Prism Volume Calculator?
Calculate the volume and surface area of a box or rectangular prism. These geometry calculators work out area, perimeter, volume and surface area for common shapes. Units are flexible — enter every length in the same unit and the answer comes back in that unit (squared or cubed).
How to use the Rectangular Prism Volume Calculator
- Enter your length, your width, your height.
- Results update automatically as you type; you can also press Calculate.
- Read the output: volume, surface area, space diagonal.
- Use the 📊 chart to see the result visually, then copy or share it.
Formula and method
Worked example
With length = 10, width = 6, height = 4, the Rectangular Prism Volume Calculator returns volume: 240; surface area: 248; space diagonal: 12.3288280059.
Tips for better results
- Keep all measurements in one unit before calculating.
- Area units are squared (m², ft²) and volume units are cubed (m³, ft³).
- Use our area and volume converters to switch units afterwards.
Frequently asked questions
What does the Rectangular Prism Volume Calculator do?
Calculate the volume and surface area of a box or rectangular prism.
How is it calculated?
The Rectangular Prism Volume Calculator uses this method: V = l × w × h.
Can you show an example?
With length = 10, width = 6, height = 4, the Rectangular Prism Volume Calculator returns volume: 240; surface area: 248; space diagonal: 12.3288280059.
Is the Rectangular Prism Volume Calculator accurate?
Yes. It uses standard formulas and exact constants, and the results are verified by our automated test suite. Values are displayed to up to 12 significant digits.
Is this tool free and private?
Yes — the Rectangular Prism Volume Calculator is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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