Volume Calculator
Choose a solid shape and enter its measurements to get the volume and the surface area, with the formula shown.
Type a number and the answer appears straight away.
Volume24 cubic units
- Surface area
- 52 square units
- Formula
- length x width x height
The answer is in the cube of whatever unit you measured in: inches give cubic inches, centimeters give cubic centimeters.
The math behind it: Volume
box: length x width x height; cylinder: pi x radius squared x height; sphere: 4/3 x pi x radius cubed
A cylinder with a radius of 3 and a height of 10 holds 282.74 cubic units. A sphere with a radius of 3 has a volume of 113.1. Cones and pyramids hold exactly one third as much as the cylinder or box they fit inside.
Common questions
How do I calculate volume?
For a box, multiply the length, width and height. A box 4 by 3 by 2 has a volume of 24 cubic units.
How do I find the volume of a cylinder?
Multiply pi by the radius squared, then by the height. With a radius of 3 and a height of 10: 3.1416 x 9 x 10 = 282.74.
How do I convert volume to liters or gallons?
One cubic foot is 28.32 liters or 7.48 US gallons, and 1,000 cubic centimeters is exactly one liter. Our liquid volume converter handles the rest.
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