How it's calculated
gal = ft³ × 7.48052
ft³ = cubic feet, gal = US gallons. 1 cubic foot = 7.48052 US gallons; reverse: ft³ = gal × 0.133681.
Common values
| Cubic Feet | US Gallons |
|---|---|
| 1 | 7.481 |
| 5 | 37.40 |
| 10 | 74.81 |
| 50 | 374.0 |
| 100 | 748.1 |
Common questions
How many gallons are in a cubic foot?
About 7.481 US gallons, from the exact 1,728 over 231 cubic-inch ratio.
How do I size an aquarium in gallons?
Find the tank volume in cubic feet, then multiply by 7.481 to get US gallons.