Cubic Feet to Gallons Converter
Convert cubic feet and US liquid gallons in either direction with an explicitly named gallon standard.
Main conversion: cubic feet ↔ US liquid gallons
Paste ft³, ft3, cu ft, cubic feet, US gal, or gallons. A pasted unit sets the direction.
Other gallon definitions
The main result stays in US liquid gallons. These separate reference rows show why the gallon system must be named.
| System | Gallons in 1 ft³ |
|---|---|
| US liquid | ≈ 7.480519481 gal per ft³ |
| Imperial | ≈ 6.228835459 gal per ft³ |
| US dry | ≈ 6.428511640 gal per ft³ |
Cubic feet to US gallons formula
US liquid gallons = cubic feet × 576/77. The ratio is exact. One cubic foot therefore displays as approximately 7.480519481 US liquid gallons when rounded to nine decimal places.
Common cubic feet to gallons values
| Cubic feet | US liquid gallons |
|---|---|
| 1 ft³ | ≈ 7.480519481 US gal |
| 2 ft³ | ≈ 14.961038961 US gal |
| 5 ft³ | ≈ 37.402597403 US gal |
| 10 ft³ | ≈ 74.805194805 US gal |
| 100 ft³ | ≈ 748.051948052 US gal |
US liquid gallons to cubic feet
Cubic feet = US liquid gallons × 77/576. One US liquid gallon therefore displays as approximately 0.133680556 ft³. Select US gallons, paste a labeled value, or use Swap to reverse a valid result without truncating it first.
Why this page names US liquid gallons
The word gallon can refer to different volumes. One cubic foot is approximately 7.480519481 US liquid gallons, 6.228835459 Imperial gallons, or 6.428511640 US dry gallons. The main converter uses only US liquid gallons and keeps the other definitions in a separate comparison.
Frequently asked questions
How many US gallons are in one cubic foot?
One cubic foot contains exactly 576/77 US liquid gallons, which displays as approximately 7.480519481 US gallons.
How do I convert cubic feet to US liquid gallons?
Multiply cubic feet by 576/77. For example, 10 cubic feet is approximately 74.805194805 US liquid gallons.
How do I convert US liquid gallons to cubic feet?
Multiply US liquid gallons by 77/576. For example, 100 US liquid gallons is approximately 13.368055556 cubic feet.
Can I paste ft³, cu ft, or US gal?
Yes. The converter recognizes ft³, ft3, cu ft, cubic foot, cubic feet, US gal, gallon, and gallons. A pasted unit overrides the selected direction.
Are US liquid, Imperial, and US dry gallons interchangeable?
No. They are different physical volumes. The main converter always uses US liquid gallons; Imperial and US dry values appear only in the separate reference table.