Volume Calculator

Computes the volume of a box, a cylinder, or a sphere in the unit you pick.

1. Choose the shape and the unit.
2. Enter the lengths in that unit.
3. Read the volume in cubic units.

Box, cylinder, and sphere volume

Box: length × width × height. Cylinder: π × radius × radius × height. Sphere: 4/3 × π × radius × radius × radius.

Source. A box is length times width times height. A cylinder is π times the radius squared times the height. A sphere is 4/3 times π times the radius cubed. The selected unit labels the result and does not convert it.

Updated November 1, 2026

A box 2 ft by 3 ft by 4 ft has a volume of 24 cubic feet.

• The unit is a label. Changing it does not convert the number. Use the unit converter to change units.
• Lengths cannot be negative.

Is a cube just a box?

Yes. Enter the same length for all three sides.