Cup (US Customary) to Gallon (US liquid) Conversion Result

Cup (US Customary): the U.S. customary cup is a unit of volume widely used in cooking, baking, and everyday measurements in the United States. It is slightly smaller then U.S. legal cup and is equal to 236.588 milliliters.

Some Considerations:
  • In American recipes: Always assume the cup measurement refers to the U.S. customary cup unless stated otherwise.
  • For international recipes: Check if the recipe specifies metric cups or imperial cups, as these are common outside the U.S.


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.