Cubic Inches to US Gallons Converter
How to convert cubic inches to US gallons
US gallons = cubic inches ÷ 231
To convert cubic inches to US gallons, divide the number of cubic inches by 231.
1 in³ = 0.00432900433 US gal
Examples
- One US gallon: 231 in³ ÷ 231 = 1 US gal
- One cubic foot: 1,728 in³ ÷ 231 = 7.48051948 US gal
Good to know
This is the US liquid gallon of 3.785411784 L. The imperial gallon used in the UK is 4.54609 L, about 20% larger.
Cubic inches to US gallons conversion table
| Cubic inches (in³) | US gallons (US gal) |
|---|---|
| 1 in³ | 0.00432900433 US gal |
| 2 in³ | 0.00865800866 US gal |
| 3 in³ | 0.012987013 US gal |
| 4 in³ | 0.0173160173 US gal |
| 5 in³ | 0.0216450216 US gal |
| 6 in³ | 0.025974026 US gal |
| 8 in³ | 0.0346320346 US gal |
| 10 in³ | 0.0432900433 US gal |
| 12 in³ | 0.0519480519 US gal |
| 15 in³ | 0.0649350649 US gal |
| 20 in³ | 0.0865800866 US gal |
| 25 in³ | 0.108225108 US gal |
| 50 in³ | 0.216450216 US gal |
| 100 in³ | 0.432900433 US gal |
| 250 in³ | 1.08225108 US gal |
| 500 in³ | 2.16450216 US gal |
| 1,000 in³ | 4.32900433 US gal |
Unit definitions
- Cubic inch (in³)
- A cubic inch is the volume of a cube with 1-inch sides, exactly 16.387064 milliliters. It is used in the United States for engine displacement and small containers.
- US gallon (US gal)
- The US liquid gallon is defined as exactly 231 cubic inches, which is 3.785411784 liters. It is used in the United States for fuel, milk and other liquids.
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