US liquid gallons
A US liquid gallon is a volume measurement used in the United States for liquids such as water, gasoline, and milk. One US liquid gallon is about 3.78541 liters. A standard bathtub is about 80 gallons of water and a car gas tank can hold anywhere between 12 and 20 gallons of gas.
UK quarts
A UK quart is a unit of volume in the United Kingdom. One UK quart is a quarter of a UK gallon at about 1.13652 liters.