Volume
Calculate volume of 3D shapes
How to use Volume
- 1Pick a solid: cuboid, cube, cylinder, sphere, cone and more.
- 2Enter the matching dimensions (length/width/height, radius, height).
- 3Read the volume and switch units among mm³ / cm³ / m³ / L.
How is volume calculated?
cuboid = l×w×h; cylinder = πr²h; sphere = 4/3·πr³Volume is the space a three-dimensional object occupies, measured in cubic units. A cuboid is length × width × height; a cylinder is base area πr² times height; a sphere is 4/3πr³.
Watch the unit conversion: 1 cubic metre = 1000 litres. Liquids are usually given in litres or millilitres, solids in cm³. Volume matters for paint, packing boxes and aquarium capacity.
Frequently asked questions
Are volume and capacity the same?
Close. Capacity is what a container holds (litres/mL); volume is the space an object takes (m³/cm³). The numbers convert directly.
How do litres and cubic metres relate?
1 m³ = 1000 L, and 1 L = 1000 mL = 1000 cm³. The tool switches display for you.
How do I measure an irregular object's volume?
Use water displacement (submerge and read the rise in a graduated cylinder), or 3D scan and compute.