Cubic Inch to Gallon (US liquid) Conversion Result

Cubic Inch: is a unit of volume in the imperial and U.S. customary systems of measurement. It is equivalent to the volume of a cube with sides each measuring one inch. The symbol for cubic inches is "in3" or "cu in."

Interesting facts:
  • Cubic inches have been historically used in aviation to express the displacement of aircraft engines. However, the aviation industry now commonly uses the metric system for many measurements.


Gallon (US liquid): unit of volume in the U.S. customary system widely used for measuring larger quantities of liquid. It is one of the most commonly recognized volume units in the U.S., particularly for gasoline, milk, and water. The U.S. gallon is abbreviated as "gal" and 1 gallon is equal to 3,785.411784 ml.

Relation to Other U.S. Customary Units:
  • 1 gallon = 4 quarts.
  • 1 gallon = 8 pints.
  • 1 gallon = 16 cups.
  • 1 gallon = 231 cubic inches.

Interesting facts:
  • 1 U.S. gallon of water weighs approximately 8.34 pounds (3.78 kg).
  • The U.S. gallon is smaller than the imperial gallon, which can lead to confusion in international trade or travel.
  • In the U.S., fuel efficiency is measured in miles per gallon (MPG), which is a key metric for vehicle performance.