Enter length, width and height in any units to get the volume in cubic feet — plus cubic yards, cubic meters, gallons and cubic inches.
How this calculator arrives at its answer
This cubic feet calculator finds the volume of any box-shaped space and converts it into every common unit at once. Mix units freely — feet, inches, yards, metres or centimetres — and it handles the conversion.
It’s useful for shipping and storage, appliance sizing, soil and gravel volumes, and any time you need a quick ft³ figure.
Try it with these numbers
The calculator opens with a length of 4, width of 3, height of 2. On those figures the volume is 24. Underneath, Cubic feet comes out at 24 and Cubic yards at 0.889. Change any field and every figure updates as you type.
Getting your answer
- Enter length, width and height, each with its own unit.
- Read the cubic feet at the top and the other units below.
- Use the cubic yards line when ordering bulk landscape materials.
Formula reference
cubic feet = length × width × height (all converted to feet)
cubic yards = ft³ ÷ 27 · US gallons = ft³ × 7.48
Questions people ask about this
How do I calculate cubic feet?
Convert length, width and height to feet, then multiply all three together. This tool does the conversion for you.
How many cubic feet in a cubic yard?
Exactly 27 — a cubic yard is 3×3×3 feet.
How do I convert cubic feet to gallons?
Multiply cubic feet by about 7.48 to get US gallons.