How to convert cubic inches to us gallons
To convert a measurement in cubic inches to us gallons, multiply the value by 0.004329004329. The conversion factor comes from the relationship between both units and the liter.
For example, to convert 5 in³ to us gallons: 5 × 0.004329004329 = 0.021645021645 gal.
What is a cubic inch?
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.
What is a us gallon?
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).
Cubic Inches to us gallons worked examples
Here are some common values converted:
1 in³ = 0.004329004329 gal 5 in³ = 0.021645021645 gal 10 in³ = 0.04329004329 gal 50 in³ = 0.21645021645 gal 100 in³ = 0.4329004329 gal
Frequently asked questions
How many us gallons are in one cubic inch?
One cubic inch (in³) equals 0.004329004329 us gallons (gal). Multiply any value in cubic inches by 0.004329004329 to convert to us gallons.
How do I convert cubic inches to us gallons?
Multiply the value in cubic inches by 0.004329004329. For example, 5 in³ × 0.004329004329 = 0.021645021645 gal.
How do I convert us gallons to cubic inches?
Multiply the value in us gallons by 231, or divide by 0.004329004329. Use the swap button on the converter above to reverse the direction.
Is the cubic inch to us gallon conversion exact?
Conversions between metric volumes are exact by definition. US and imperial volumes are defined exactly relative to the liter, so these factors are exact.
What is the formula for cubic inches to us gallons?
The formula is: gal = in³ × 0.004329004329. This comes from the definition of both units relative to the liter.