Volume of ten common solids
Pick a shape — cube, tank, sphere, cylinder, cone, pyramid, capsule, frustum, ellipsoid or tube — and enter its dimensions to get the volume, surface area (where defined), and the same figure converted to litres, gallons, cubic metres and cubic feet.
How to use
- Select the solid from the dropdown
- Enter its dimensions and pick a unit
- Press Calculate for the volume, capacity conversions and the formula worked through
Common questions
How many shapes does this cover?
Ten: cube, rectangular tank, sphere, cylinder, cone, square pyramid, capsule, conical frustum, ellipsoid and tube (a hollow pipe wall). Each has its own diagram and formula, selected from the Shape dropdown.
What does the tube shape actually calculate?
The volume of the pipe wall material itself — the outer cylinder minus the hollow inside — not what the pipe can hold. If you want the capacity the pipe can carry, that's the inner-diameter volume, which is shown as a separate row alongside the main answer.
Where does the "if it were full of water" weight come from?
It converts the volume to litres and assumes water's density of 1 kg per litre, since that's the one density most people have an intuitive feel for. It's a size reference, not a material-specific weight calculation.