How to calculate cubic feet
Convert any inches to fractions of a foot, then multiply length by width and height.
Cubic feet = Length × Width × Height
Cubic feet example
A space measuring 4 feet long, 3 feet wide and 2 feet high has a volume of 24 cubic feet.
Frequently asked questions
How many cubic feet are in a cubic yard?
27 cubic feet.
How do I convert inches to feet?
Divide inches by 12.
Is cubic feet a measurement of area?
No. Cubic feet measures three-dimensional volume, while square feet measures two-dimensional area.
Using this calculator effectively
The cubic feet calculator finds three-dimensional volume from length, width and height. It is useful for boxes, rooms, storage spaces and material quantities where cubic feet is the working unit.
Common uses
- Finding the volume of a rectangular container or space.
- Checking storage or packing volume.
- Creating an intermediate volume before converting to another unit.
Tips for a better estimate
- Use the same measurement unit for every dimension before multiplying.
- Measure inside dimensions for usable capacity and outside dimensions for shipping footprint when relevant.
- Split irregular shapes into smaller rectangular sections for a better estimate.
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