A gallon is a volumetric unit of measurement. People have used many different gallons throughout history. Only two gallons are still commonly used, which are the imperial and U.S. liquid gallon. 1 imperial gallon is 4.5 litres and 1 U.S. liquid gallon is 4.4 litres
Fox Business: Gas prices dip below $4 a gallon, here's why it still could be bad news for Biden
Gas prices dip below $4 a gallon, here's why it still could be bad news for Biden
Las Vegas Review-Journal: Gas prices dip 25 cents a gallon, but drivers still feel pinch at pump
Gas prices dip 25 cents a gallon, but drivers still feel pinch at pump
Yahoo Finance: As national gas prices top $4 a gallon, Oklahoma still among cheapest
As national gas prices top $4 a gallon, Oklahoma still among cheapest
Nasdaq: 8 Countries Where a Gallon of Gas Still Costs Less Than $2
8 Countries Where a Gallon of Gas Still Costs Less Than $2
MSN: Michigan gas prices continue to rise, but still hovering around $4 a gallon
Michigan gas prices continue to rise, but still hovering around $4 a gallon
The gallon is a unit of volume in British imperial units and United States customary units.
Definition: A gallon is a unit of volume specifically regarding liquid capacity in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters).
A gallon is a customary unit for measuring liquid volume and liquid capacity. Learn more about the unit with examples and fun facts!