US Gallons to Cubic Inches Converter

To convert a measurement in us gallons to cubic inches, multiply the value by 231. The conversion factor comes from the relationship between both units and the liter.

For example, to convert 5 gal to cubic inches: 5 × 231 = 1,155 in³.

A US gallon is a US customary unit of volume equal to 4 quarts, 128 fluid ounces, or exactly 3.785411784 liters. The US gallon is based on the old English wine gallon of 231 cubic inches. It is smaller than the imperial gallon used in the UK and Commonwealth, a frequent source of fuel-economy confusion.

Common uses of us gallons include: Fuel sold at the pump in the US; Milk, water, and beverage jug sizes; Paint and household liquid quantities; Vehicle fuel-economy figures (miles per gallon).

A cubic inch is an imperial and US customary unit of volume equal to the space of a cube one inch on each side, exactly 16.387064 milliliters. The cubic inch was the traditional way to express American engine displacement (e.g. a '350 cubic inch' V8) before the metric liter became common. It remains in use in US manufacturing and packaging.

Common uses of cubic inches include: Classic and American V8 engine displacement; Packaging and box volume in the US; Woodworking and material volume; Compressor and pump specifications.

Here are some common values converted:

1 gal = 231 in³ 5 gal = 1,155 in³ 10 gal = 2,310 in³ 50 gal = 11,550 in³ 100 gal = 23,100 in³