How to convert cubic feet to gallons
Formula: gal = ft³ × 7.48052
Worked example: 10 ft³ → 10 × 7.48052 = 74.8052 gal
One cubic foot holds 7.48 US gallons. To find how much water a pool or tank holds, compute its volume in cubic feet (length × width × average depth) and multiply by 7.48: a 20 × 10 × 5 ft pool holds about 7,481 gallons.
Cubic feet to gallons conversion chart
| Cubic feet (ft³) | Gallons (gal) |
|---|---|
| 1 ft³ | 7.48052 gal |
| 2 ft³ | 14.961 gal |
| 3 ft³ | 22.4416 gal |
| 4 ft³ | 29.9221 gal |
| 5 ft³ | 37.4026 gal |
| 6 ft³ | 44.8831 gal |
| 7 ft³ | 52.3636 gal |
| 8 ft³ | 59.8442 gal |
| 9 ft³ | 67.3247 gal |
| 10 ft³ | 74.8052 gal |
| 12 ft³ | 89.7662 gal |
| 15 ft³ | 112.208 gal |
| 20 ft³ | 149.61 gal |
| 25 ft³ | 187.013 gal |
| 30 ft³ | 224.416 gal |
| 40 ft³ | 299.221 gal |
| 50 ft³ | 374.026 gal |
| 75 ft³ | 561.039 gal |
| 100 ft³ | 748.052 gal |
| 250 ft³ | 1,870.13 gal |
| 500 ft³ | 3,740.26 gal |
| 1,000 ft³ | 7,480.52 gal |
What is a cubic foot?
The cubic foot holds about 28.3 liters or 7.48 US gallons. Americans use it for refrigerator and freezer capacity, moving trucks, bagged soil and natural gas billing, where one CCF is 100 cubic feet.
What is a gallon?
The US gallon is defined as 231 cubic inches, exactly 3.785411784 liters, and holds 4 quarts or 128 fluid ounces. Gasoline, milk, paint and water use in the United States are measured in gallons.