Cubic Inch Conversions

Use this easy and mobile-friendly calculator to convert between Cubic Inches and other units of Volume.
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1 Cubic Inch ≈
0.0043290043 U.S. Gallons
result rounded
Decimal places
Cubic Inches
A cubic inch is a unit of volume. It is the size of a cube that is 1 inch on a side. It is approximately 1.1 tablespoons, or about 16.4 cubic centimeters.
Common abbreviations: cu in, in³, in^3
A U.S. gallon is a unit of volume equal to 128 U.S. fluid ounces, or about 3.785 liters. It should not be confused with the imperial gallon used in the United Kingdom.
Common abbreviations: gal, US gal