US cups
A US cup is a common unit of measurement in the United States for cooking and baking. One US cup is about 0.236588 liters and is often used to measure ingredients in recipes.
US oil barrels
A US oil barrel, also known as a petroleum barrel, is a volume unit used in the oil and gas industry to measure crude oil or liquid petroleum gas (LPG). One US oil barrel is 42 US gallons or about 159 liters.