Convert cubic inches to gallons

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Cubic inch

The cubic inch (symbol in 3) is a unit of volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions (length, width, and depth) being one inch long which is equivalent to 1/231 of a US gallon. 


Gallon (US)

A gallon is a unit of volume specifically regarding liquid capacity in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 litres). In contrast, the imperial gallon, which is used in the United Kingdom, Canada, and some Caribbean nations, is defined as 4.54609 litres. In both systems, the gallon is divided into four quarts. Quarts are then divided into two pints and pints are divided into two cups. A cup is comprised of two gills, making one gallon equal four quarts, eight pints, sixteen cups, or thirty-two gills. Further differentiating the US and the imperial gallon, a US gill is divided into four fluid ounces, while an imperial gallon is divided into five. A US fluid ounce is therefore 1/128 of a US gallon while an imperial fluid ounce is 1/160 of an imperial gallon. 


Cubic inch to Gallon (US) conversion table
Cubic inchGallon (US)Gallon (US)Cubic inch
10.0043291231
20.008658012462
30.0129873693
50.02164551155
100.04329102310
200.0865801204620
250.108225255775
500.216455011550
1000.432910023100
2501.0822525057750
5002.1645500115500
10004.3291000231000
How to convert Cubic inch to Gallon (US)

1 in^3 = 0.004329 gal (US). To convert any value, multiply it by 0.004329. For example, 25 in^3 = 0.108225 gal (US).

Frequently asked questions
How many gal (US) are there in one in^3?
One in^3 is equal to 0.004329 gal (US).
How do you convert Cubic inch to Gallon (US)?
Multiply the value in Cubic inch by 0.004329 to get the result in Gallon (US).
How much is 25 in^3 in gal (US)?
25 in^3 is equal to 0.108225 gal (US).
How do you convert Gallon (US) back to Cubic inch?
Divide by the same factor: multiply the value in Gallon (US) by 231 to get Cubic inch.

Most common volume unit conversions