Convert US gallons to cubic feet
1 gal = 0.13368056 ft³. Change the amount below, or read the formula and the reference table further down.
1 US gallon equals
cubic feet
1 gal = 0.13368056 ft³
The formula
US gallons and cubic feet both measure volume from the same zero, so a single multiplier does the job.
ft³ = gal × 0.1336805556
Going the other way? Convert cubic feet to US gallons.
US gallons to cubic feet table
Common values, rounded for reading.
| US gallons (gal) | Cubic feet (ft³) |
|---|---|
| 1 | 0.133681 |
| 2 | 0.267361 |
| 3 | 0.401042 |
| 4 | 0.534722 |
| 5 | 0.668403 |
| 6 | 0.802083 |
| 7 | 0.935764 |
| 8 | 1.0694 |
| 9 | 1.2031 |
| 10 | 1.3368 |
| 15 | 2.0052 |
| 20 | 2.6736 |
| 25 | 3.342 |
| 30 | 4.0104 |
| 40 | 5.3472 |
| 50 | 6.684 |
| 75 | 10.026 |
| 100 | 13.3681 |
| 250 | 33.4201 |
| 500 | 66.8403 |
| 1,000 | 133.68 |
Questions people ask
- How many cubic feet are in a US gallon?
- One US gallon equals 0.1336805556 cubic feet.
- How do I convert US gallons to cubic feet by hand?
- Multiply the number of US gallons by 0.1336805556. For a rough check, 0.134 is close enough for most everyday use.
- What is 1 US gallon in cubic feet?
- 1 US gallon is 0.13368056 cubic feet.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.