Volume Calculator
Volume and surface area of cubes, cylinders, cones, spheres and more.
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How to use this calculator
Choose a solid (cube, cuboid, cylinder, cone, sphere, hemisphere, pyramid or triangular prism) and your units, then enter the measurements. You get the volume, the surface area where relevant, and conversions to cubic metres, litres and cubic feet.
How it's calculated
Cube V = a³. Cuboid V = l × w × h. Cylinder V = πr²h. Cone V = ⅓πr²h. Sphere V = 4/3 πr³. Hemisphere V = ⅔πr³. Pyramid V = ⅓ × base area × height. Triangular prism V = ½bhL.
Worked example
A cylinder with radius 3 m and height 10 m has volume π × 3² × 10 ≈ 282.74 m³, which is about 282,743 litres.
Frequently asked questions
How do I convert cubic metres to litres?
1 cubic metre is 1,000 litres. The calculator shows this for you.
What is surface area?
It is the total area of all the outside faces of the solid, in square units.
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Last updated October 2026. Results are for learning and guidance; always check important work. Calculations run in your browser and are not stored.