Cup (US Customary) to Barrel (Oil) 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.


Barrel (Oil): is a globally recognized unit of volume used to measure crude oil and other petroleum products. Although the actual liquid is not typically stored in barrels today, the term remains a standard in the oil industry for pricing, production, and trade. The size and definition of the oil barrel can vary slightly depending on the measurement system, but the most commonly used standard is the U.S. oil barrel.

1 oil barrel is equal to 42 U.S. gallons or 158.987 liters.