Convert cubic feet to US gallons
1 ft³ = 7.480519 gal. Change the amount below, or read the formula and the reference table further down.
1 cubic foot equals
US gallons
1 ft³ = 7.480519 gal
The formula
Cubic feet and US gallons both measure volume from the same zero, so a single multiplier does the job.
gal = ft³ × 7.48051948
Going the other way? Convert US gallons to cubic feet.
Cubic feet to US gallons table
Common values, rounded for reading.
| Cubic feet (ft³) | US gallons (gal) |
|---|---|
| 1 | 7.4805 |
| 2 | 14.961 |
| 3 | 22.4416 |
| 4 | 29.9221 |
| 5 | 37.4026 |
| 6 | 44.8831 |
| 7 | 52.3636 |
| 8 | 59.8442 |
| 9 | 67.3247 |
| 10 | 74.8052 |
| 15 | 112.21 |
| 20 | 149.61 |
| 25 | 187.01 |
| 30 | 224.42 |
| 40 | 299.22 |
| 50 | 374.03 |
| 75 | 561.04 |
| 100 | 748.05 |
| 250 | 1,870.13 |
| 500 | 3,740.26 |
| 1,000 | 7,480.52 |
Questions people ask
- How many US gallons are in a cubic foot?
- One cubic foot equals 7.48051948 US gallons.
- How do I convert cubic feet to US gallons by hand?
- Multiply the number of cubic feet by 7.48051948. For a rough check, 7.5 is close enough for most everyday use.
- What is 1 cubic foot in US gallons?
- 1 cubic foot is 7.480519 US gallons.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.