Convert liters to gallons (US or UK) or gallons to liters instantly with our free volume converter. Useful for fuel efficiency, cooking, aquariums, water storage, and comparing international measurements.
Volume Converter
Liters to Gallons Formula
There are two types of gallons: 1 liter = 0.264172 US gallons and 1 liter = 0.219969 UK (imperial) gallons. When in doubt in the United States, use US gallons.
Common Liter to Gallon Conversions
- 1 L = 0.264 US gal
- 3.785 L = 1 US gallon
- 4.546 L = 1 UK gallon
- 10 L = 2.642 US gal
- 20 L = 5.283 US gal
- 40 L = 10.567 US gal (typical car fuel tank)
Frequently Asked Questions
How many liters is 1 US gallon?
1 US gallon = 3.78541 liters. This is the standard gallon used in the United States for fuel, beverages, and most liquid measurements.
What is the difference between US and UK gallons?
A US gallon equals 3.785 liters, while a UK (imperial) gallon equals 4.546 liters. The UK gallon is about 20% larger. Always check which type is being used when comparing fuel economy internationally.
How do I convert mpg (US) to L/100km?
Use the formula: L/100km = 235.214 ÷ mpg. For example, 30 mpg = 235.214 ÷ 30 = 7.84 L/100km.
How many gallons is a 5-liter engine?
A 5-liter engine displacement equals approximately 305 cubic inches or 1.32 US gallons. Engine displacement is typically measured in liters or cubic centimeters (cc).
How many liters in a gallon of milk?
A US gallon of milk contains 3.785 liters. A half-gallon (common in US grocery stores) is 1.893 liters, and a quart is 0.946 liters.