Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 gal | 0.230999 in³ | |
| 0.01 gal | 2.30999 in³ | |
| 0.1 gal | 23.0999 in³ | |
| 1 gal | 230.999 in³ | |
| 5 gal | 1155 in³ | |
| 10 gal | 2309.99 in³ | |
| 50 gal | 11550 in³ | |
| 100 gal | 23099.9 in³ | |
| 1000 gal | 230999 in³ |
Common us gallon values converted to cubic inch — factor: 1 gal = 231 in³
| US Gallon (gal) | Cubic Inch (in³) | Context |
|---|---|---|
| 0.0078 gal | 1.802 in³ | Tablespoon |
| 0.031 gal | 7.161 in³ | Quarter cup |
| 0.0625 gal | 14.44 in³ | Cup |
| 0.125 gal | 28.87 in³ | Pint |
| 0.25 gal | 57.75 in³ | Quart |
| 0.5 gal | 115.5 in³ | Half gallon |
| 1 gal | 231 in³ | Gallon jug |
| 2 gal | 462 in³ | Two gallons |
| 5 gal | 1,155 in³ | Jerrycan |
| 10 gal | 2,310 in³ | 10-gallon drum |
| 20 gal | 4,620 in³ | 20-gallon tank |
| 42 gal | 9,702 in³ | Oil barrel |
| 55 gal | 1.27e+04 in³ | Drum barrel |
| 100 gal | 2.31e+04 in³ | Large drum |
| 1,000 gal | 2.31e+05 in³ | Tank |
Converting us gallon to cubic inch comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using cubic inch, or a laboratory protocol may specify volumes in us gallon that need to be measured with equipment calibrated in cubic inch.
In everyday use, knowing that 5 gal = 1155 in³ and 10 gal = 2310 in³ covers most common situations. For bulk calculations, 100 gal = 2.31e+04 in³ is a useful anchor. The reverse conversion — cubic inch back to us gallon — uses the factor 0.004329, so 1 in³ = 0.004329 gal.
All conversions use the internationally recognized factor of exactly 1 gal = 231 in³. 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: Cubic Inch = US Gallon × 230.99938
Multiply any us gallon value by 230.99938 to get cubic inch. One us gallon equals 230.99938 in³.
Reverse: US Gallon = Cubic Inch × 0.0043290159
1 gal = 230.99938 in³. Memorize this for instant mental estimates.
Use 230.9994 as a quick mental factor. Multiply your US gallons value by this to estimate cubic inches.
To verify: multiply your result by 0.0043290159 to recover the original gal value.
Prices fuel in USD per gallon and tracks daily sales volume in thousands of gallons.
Calculates pesticide and fertilizer application rates in gallons per acre.
Measures pool volume in gallons to calculate chlorine and pH chemical dosages.
Purchases engine oil, transmission fluid, and coolant in quart and gallon containers.
Estimates coverage (one US gallon covers about 350 sq ft) and quotes by the gallon.
Specifies water heater tank capacity (40, 50, 80 gallons) for residential systems.
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.
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.