The common “how many cubic feet is this room or box” question, answered directly from three dimensions.
How it works
Multiplying length, width, and height (all in feet) gives the volume in cubic feet.
What this does not include
This does not include unit conversion from an already-known volume in another unit — for that, use this site’s volume converter instead. This tool computes cubic feet directly from dimensions.
How to use this calculator
- Enter the length, width, and height, all in feet.
Frequently asked questions
What’s this commonly used for?
Estimating a room’s air volume for HVAC sizing, a storage unit or moving box’s capacity, or shipping container volume.
What if my measurements are in inches?
Convert to feet first (divide by 12), since this calculator expects all three dimensions in feet.
Does the order of the three dimensions matter?
No — multiplication is commutative, so length, width, and height can be entered in any order without changing the result.
