Gallon Conversions

About Gallons

The gallon is a unit of volume commonly used in the United States for measuring liquids. The US liquid gallon equals 3.78541 liters or 128 fluid ounces.

Common Uses

• Automotive: Fuel efficiency measurements (miles per gallon)
• Beverages: Large containers of milk, juice, and water
• Paint & Chemicals: Industrial and household liquid measurements
• Agriculture: Irrigation and pesticide application

History

The gallon has its roots in medieval English wine measurements, where different types of gallons were used for wine, ale, and other commodities. The US gallon was standardized in 1832.