Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 in³ | 4.32902e-06 gal | |
| 0.01 in³ | 4.32902e-05 gal | |
| 0.1 in³ | 0.000432902 gal | |
| 1 in³ | 0.00432902 gal | |
| 5 in³ | 0.0216451 gal | |
| 10 in³ | 0.0432902 gal | |
| 50 in³ | 0.216451 gal | |
| 100 in³ | 0.432902 gal | |
| 1000 in³ | 4.32902 gal |
Common cubic inch values converted to us gallon — factor: 1 in³ = 0.004329 gal
| Cubic Inch (in³) | US Gallon (gal) | Context |
|---|---|---|
| 1 in³ | 0.004329 gal | — |
| 5 in³ | 0.02165 gal | — |
| 10 in³ | 0.04329 gal | — |
| 16 in³ | 0.06926 gal | — |
| 30 in³ | 0.1299 gal | — |
| 61 in³ | 0.2641 gal | — |
| 100 in³ | 0.4329 gal | — |
| 231 in³ | 1 gal | — |
| 500 in³ | 2.165 gal | — |
| 1,000 in³ | 4.329 gal | — |
| 1,728 in³ | 7.481 gal | — |
| 3,000 in³ | 12.99 gal | — |
| 5,000 in³ | 21.65 gal | — |
| 1e+04 in³ | 43.29 gal | — |
| 4.666e+04 in³ | 202 gal | — |
Converting cubic inch to us gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us gallon, or a laboratory protocol may specify volumes in cubic inch that need to be measured with equipment calibrated in us gallon.
In everyday use, knowing that 5 in³ = 0.02165 gal and 10 in³ = 0.04329 gal covers most common situations. For bulk calculations, 100 in³ = 0.4329 gal is a useful anchor. The reverse conversion — us gallon back to cubic inch — uses the factor 231, so 1 gal = 231 in³.
All conversions use the internationally recognized factor of exactly 1 in³ = 0.004329 gal. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: US Gallon = Cubic Inch × 0.0043290159
Multiply any cubic inch value by 0.0043290159 to get us gallon. One cubic inch equals 0.0043290159 gal.
Reverse: Cubic Inch = US Gallon × 230.99938
1 in³ = 0.0043290159 gal. Memorize this for instant mental estimates.
Use 0.0043 as a quick mental factor. Multiply your cubic inches value by this to estimate US gallons.
To verify: multiply your result by 230.99938 to recover the original in³ value.
Compares engine displacements in cubic inches — a Harley Sportster 1200 displaces 73.2 in³.
Calculates material volume for machined parts in cubic inches for cost estimation.
Compares refrigerator and oven interior volumes in cubic inches on US spec sheets.
Determines hydraulic cylinder displacement in cubic inches for legacy US equipment.
Compares compressor capacities in cubic inch displacement for older American systems.
Calculates product and box volumes in cubic inches to optimize pallet stacking.
The cubic inch is the volume of a cube with one-inch sides, equal to exactly 16.387064 mL. It belongs to US customary and British Imperial systems, in practical use since the 17th century.
Cubic inches appear most often in engine displacement for small engines and in precision machining for material volume calculations.
Interesting fact: A standard 12-fluid-ounce US soda can has a volume of about 21.7 cubic inches.
The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.
The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.
Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.