Cubic Feet to Gallons
( ft³ → gal )
Instantly convert cubic feet to US gallons. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Cubic Feet to Gallons
To convert cubic feet to US gallons, multiply the number of cubic feet by 7.48052. This factor comes from the relationship between cubic inches and gallons: 1 ft³ = 1728 in³, and 1 US gallon = 231 in³.
Step-by-Step Example
Let’s convert 2 cubic feet to gallons:
1. Multiply by 7.48052: 2 × 7.48052 = 14.96104
2. So 2 ft³ equals approximately 14.96 gallons.
For a smaller amount, 0.5 ft³ × 7.48052 = 3.74026 gallons.
When You’d Use Each Unit
Cubic feet are commonly used in the US for measuring larger volumes like room size, refrigerator capacity, or shipping containers. Gallons are used for large volumes of liquids like gasoline, milk, or water. Converting between them helps understand vast differences in scale, such as how many gallons of water a tank can hold.
Common cubic feet values converted to gallons — typical values highlighted.
| Cubic Feet (ft³) | Gallons (gal) | Approximate |
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