Cubic Feet Calculator
Calculate cubic feet for boxes, rooms and cylinders from any units.
Enter your values to see the result.
Continue your work
- Cubic Yard Calculator — Convert to cubic yards.
- Volume Converter — Convert between other volume units.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Cubic Feet Calculator
Calculate cubic feet for boxes, rooms and cylinders from any units.
- 1 Choose the shape and unit.
- 2 Enter the dimensions and how many items.
- 3 Read the volume in cubic feet and other units.
Example and practical tips
A moving box of 18 × 18 × 24 in holds 4.5 cubic feet.
Frequently asked questions
How do I convert cubic inches to cubic feet?
Divide by 1,728 (12 × 12 × 12).
How many gallons are in a cubic foot?
About 7.48 US gallons.
Report an issue
Something broken or not quite right? Tell us and we will look into it.