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

Gallon (Imperial): unit of volume in the imperial system of measurement, historically used in the United Kingdom and its former colonies. The imperial gallon is approximately 20% larger than the U.S. gallon and is equal to 4,546.09 milliliters.

Relation to Other Imperial Units:
  • 1 gallon = 4 quarts.
  • 1 gallon = 8 pints.
  • 1 gallon = 32 gills.
  • 1 gallon = 277.42 cubic inches.

Interesting Facts:
  • The term "gallon" comes from the Old Northern French word galon, meaning "a liquid measure".
  • 1 imperial gallon of water weighs approximately 10 pounds, making it a handy reference for historical trade.


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.