Convert cubic inch to US gallon
1 in³ = 0.004329004329 gal
1 in³ = 0.004329 gal
1 in³ in every volume unit
| cubic millimeter | 16,387 mm³ |
| microliter | 16,387 μL |
| milliliter | 16.387 mL |
| cubic centimeter | 16.387 cm³ |
| US teaspoon | 3.3247 tsp |
| centiliter | 1.6387 cL |
| US tablespoon | 1.1082 tbsp |
| cubic inch | 1 in³ |
| imperial fluid ounce | 0.57674 imp fl oz |
| US fluid ounce | 0.55411 fl oz |
| deciliter | 0.16387 dL |
| US cup | 0.069264 cup |
| US pint | 0.034632 pt |
| imperial pint | 0.028837 imp pt |
| US quart | 0.017316 qt |
| liter | 0.016387 L |
| cubic decimeter | 0.016387 dm³ |
| imperial quart | 0.014419 imp qt |
| board foot | 0.0069444 fbm |
| US gallon | 0.004329 gal |
| imperial gallon | 0.0036047 imp gal |
| cubic foot | 0.0005787 ft³ |
| US bushel | 0.00046503 bu |
| hectoliter | 0.00016387 hL |
| US beer barrel | 0.00013965 bbl beer |
| oil barrel | 0.00010307 bbl |
| cubic yard | 0.000021433 yd³ |
| cubic meter | 0.000016387 m³ |
| kiloliter | 0.000016387 kL |
| hundred cubic feet | 0.000005787 CCF |
| cord | 0.0000045211 cord |
| acre-foot | 1.3285e-08 ac·ft |
| million US gallons | 4.3290e-09 MG |
| cubic kilometer | 1.6387e-14 km³ |
How the conversion works
Multiply by 0.004329004329 to go from cubic inch to US gallon, or divide by it to go back. Every conversion on this site routes through the SI value (m³) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? US gallon to cubic inch — 1 gal = 231 in³.
cubic inch to US gallon — common values
| 1 in³ | 0.0043290043 gal |
| 2 in³ | 0.0086580087 gal |
| 3 in³ | 0.012987013 gal |
| 5 in³ | 0.021645022 gal |
| 10 in³ | 0.043290043 gal |
| 15 in³ | 0.064935065 gal |
| 20 in³ | 0.086580087 gal |
| 25 in³ | 0.10822511 gal |
| 50 in³ | 0.21645022 gal |
| 75 in³ | 0.32467532 gal |
| 100 in³ | 0.43290043 gal |
| 250 in³ | 1.0822511 gal |
| 500 in³ | 2.1645022 gal |
| 1000 in³ | 4.3290043 gal |