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Volume Calculator

How much does it hold? Choose the shape, enter its sizes and get the volume in litres and every other unit.

Runs in your browser · No uploads

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In every unit

UnitVolume

1 litre is 1,000 cm³; 1 m³ is 1,000 litres. Tank sizes are inside measurements.

  • Nothing leaves your device
  • No server-imposed size limits
  • No sign-up, no watermark
  • Free

How to work out a volume

  1. Choose the shape and the unit you measured in.
  2. Enter the sizes.
  3. Read the volume, and pick the unit to show it in.

Shapes

  • Cube, box (a rectangular tank or room), cylinder (a round tank), sphere, hemisphere, cone, truncated cone (a bucket), pyramid, triangular prism and capsule.
  • The surface area is shown too, where it can be worked out from the sizes.
  • For a tank, measure the inside: the walls take up space.

Units

  • Cubic centimetres (millilitres), litres, cubic metres, cubic inches, feet and yards, US and UK gallons and US fluid ounces.
  • 1 cubic metre is 1,000 litres; 1 cubic foot is about 28.3 litres.

Frequently asked questions

How many litres does a round tank hold?

Choose Cylinder, enter the inside radius (half the width) and the height. A tank 1 m wide and 1.2 m high holds about 942 litres.

Is anything sent anywhere?

No. The calculation happens in your browser, and the sizes you enter never leave your device.