What is the Cube Volume Calculator?
Calculate the volume, surface area and diagonal of a cube. 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 Cube Volume Calculator
- Enter your edge length.
- 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 edge length = 5, the Cube Volume Calculator returns volume: 125; surface area: 150; space diagonal: 8.66025403784.
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 Cube Volume Calculator do?
Calculate the volume, surface area and diagonal of a cube.
How is it calculated?
The Cube Volume Calculator uses this method: V = a³; SA = 6a².
Can you show an example?
With edge length = 5, the Cube Volume Calculator returns volume: 125; surface area: 150; space diagonal: 8.66025403784.
Is the Cube 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 Cube 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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