Convert Cubic Inches (in³) to US Liquid Gallons (gal) | in³ in gal

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Let's convert Cubic Inches (in³) to US Liquid Gallons (gal)

This quick and easy calculator will convert Cubic Inches (in³) to US Liquid Gallons (gal) and show formula, brief history on the units and quick maths for the conversion.

Enter Cubic Inches to convert to US Liquid Gallons


Quick Reference for Converting Cubic Inches to US Liquid Gallons

Formula
gal = in³ / 231
Quick Rough Maths
To get the US Liquid Gallons, divide the number of Cubic Inches by 231.0
Cubic Inches (in³) in 1 US Liquid Gallon
There are 231 Cubic Inches in 1 US Liquid Gallon
US Liquid Gallons (gal) in 1 Cubic Inch
There are 0 US Liquid Gallons in 1 Cubic Inch

Unit Information

Cubic Inch
/ˈkjuːbɪk ɪn(t)ʃ/
Symbol: in³
Unit System: Imperial

What is the Cubic Inch?

The cubic inch is a unit of volume derived from the imperial unit system and uses the symbol in³.

1 cubic inch is defined as equal to the volume of a cube with edges measuring 1 in. It is equivalent in volume to 16.387 ml, 1/231 US gallons and 1/1728 ft³.

Common uses for cubic inches include quantifying the size of electrical boxes and in the automotive industry for measuring engine displacement. The 5th generation Ford Mustang ran on a Boss 302 which was a 302 in³ engine (5.0L).

US Liquid Gallon
/ˈlɪkwɪdˈɡalən/
Symbol: gal
Unit System: US Customary

What is the US Liquid Gallon?

The liquid gallon is a unit of volume in the US customary unit system and uses the symbol gal.

It is the most common use of the word gallon and is defined as 231 in³. It is made up of 4 quarts where there are 2 pints in a quart and 16 US fluid ounces in a US pint. There are therefore 128 US fluid ounces in a US gallon.

The term gallon is most prevalent when discussing and trading oil and fuel. To ensure consistency, the temperature of the liquid (typically petroleum or alcohol) is understood to be 15.6 °C (60 °F) at the time of measurement.


Conversion Tables for Cubic Inches (in³) to US Liquid Gallons (gal)