Our volume calculator works out the cubic footage or cubic metres of any common 3D shape. It supports rectangular boxes (length × width × height), cylinders (πr²h), and spheres (4/3πr³). Volume calculations are useful for shipping and storage (working out how much fits in a container), construction (calculating how much material you need), and cooking (scaling recipes). Results are shown in cubic feet, cubic metres, litres, and US gallons.