Question 1

How do I calculate volume?

Accepted Answer

Pick a 3D shape from the list, enter its measurements (use the same unit for every input), and the volume is shown instantly. The matching formula and a labelled diagram are displayed so you can verify the inputs.

Question 2

What units does the volume calculator use?

Accepted Answer

Volume is shown in cubic units of whatever you type. Enter lengths in cm and the result is in cm³; the tool also auto-converts to mm³, mL, L, m³, in³, ft³ and gallons so you can read the result in the unit you need.

Question 3

What 3D shapes are supported?

Accepted Answer

Cube, rectangular prism (box), sphere, cylinder, cone, square pyramid, rectangular pyramid, frustum of a cone, capsule (pill), hemisphere, ellipsoid and torus (donut). Each shows a labelled diagram and the exact formula used.

Question 4

Is this volume calculator private?

Accepted Answer

Yes. All math runs in your browser with plain JavaScript. No inputs are sent to a server, no sign-up is required, and nothing is stored.