Formula
US gal to in³ conversion formula
Use this relationship for a direct conversion:
in³ = US gal x 231
Worked example
2 US gal = 462 in³.
US liquid and Imperial gallon definitions are treated separately and use their exact legal values.
Volume conversion
Convert US gallon to Cubic inch
1 us gallon (US gal) equals 231 cubic inch (in³). Enter any value below to convert from US gal to in³.
Enter a value and choose units. Results update instantly.
1 US gal = 231 in³
All Volume units
From 1 US gal| Unit | Value |
|---|---|
| Cubic meter m³ | 0.0037854118 |
| Liter L | 3.785411784 |
| Milliliter mL | 3,785.411784 |
| Cubic centimeter cm³ | 3,785.411784 |
| Cubic inch in³ | 231 |
| Cubic foot ft³ | 0.1336805556 |
| US gallon US gal | 1 |
| Imperial gallon imp gal | 0.8326741846 |
| US quart US qt | 4 |
| US customary cup US cup | 16 |
| US fluid ounce US fl oz | 128 |
Recent conversions
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Quick reference
US gallon to Cubic inch table
| US gallon (US gal) | Cubic inch (in³) |
|---|---|
| 0.01 | 2.31 |
| 0.1 | 23.1 |
| 1 | 231 |
| 2 | 462 |
| 5 | 1,155 |
| 10 | 2,310 |
| 25 | 5,775 |
| 50 | 11,550 |
| 100 | 23,100 |
| 1,000 | 231,000 |
From unit
About the us gallon
Exactly 231 cubic inches.
Symbol: US gal
To unit
About the cubic inch
The volume of a one-inch cube.
Symbol: in³
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Source
Conversion standard
Definitions are checked against NIST Handbook 44, Appendix C. Calculations use full internal precision before display rounding.
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US gal to in³ FAQ
How do you convert us gallon to cubic inch?
Use the formula in³ = US gal x 231. 1 us gallon (US gal) equals 231 cubic inch (in³).
Is the US gal to in³ conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.