Calculate the volume of boxes, cylinders, cones and spheres in cubic feet, cubic metres, litres and gallons.
This volume calculator finds the volume of common 3D shapes – a box (cuboid), cylinder, cone or sphere – and converts the answer into litres, gallons, cubic feet, cubic metres and cubic yards. Use it for tanks, containers, pipes, water features or any capacity question, in metric or imperial.
| Shape | Formula |
|---|---|
| Box / cuboid | length × width × height |
| Cylinder | π × radius² × height |
| Cone | ⅓ × π × radius² × height |
| Sphere | 4⁄₃ × π × radius³ |
A cylindrical water butt 0.5 m across (radius 0.25 m) and 1 m tall = π × 0.25² × 1 = 0.196 m³, which is about 196 litres (43 UK gallons / 52 US gallons).
One cubic metre equals exactly 1,000 litres.
There are 27 cubic feet in one cubic yard.
Divide the diameter by two. The radius is half the diameter.
Volume = π × radius² × height. The calculator handles boxes, cylinders, cones and spheres and converts to litres, gallons and cubic metres.
A sphere is (4/3) × π × radius³ and a cone is (1/3) × π × radius² × height. The calculator handles boxes, cylinders, cones and spheres for you.
