Liters to Gallons

Liters to Gallons Conversion Formula

To convert liters to US gallons, use this simple formula:

The US gallon is defined as exactly 3.785411784 liters, so one liter equals 0.264172 US gallons. This is the US liquid gallon — the imperial (UK) gallon is larger at 4.54609 liters.

Step-by-Step Volume Conversion Guide

1. Take your volume in liters
2. Divide it by 3.785412 (the number of liters in one US gallon)
3. Get your result in US gallons

Common Liters to Gallons Conversions

Practical Applications of Liters to Gallons Converter

• Fuel: Comparing car fuel economy and tank sizes between countries
• Cooking & brewing: Scaling large batch recipes across measurement systems
• Aquariums: Converting tank capacity from liters to gallons
• Water use: Understanding appliance and container capacities
• Travel: Making sense of fuel prices quoted per gallon or per liter
• Agriculture: Converting sprayer and tank volumes

History of Volume Measurement

The liter is a metric unit of volume equal to one cubic decimeter (1000 cubic centimeters). The US gallon descends from the English wine gallon of 231 cubic inches, standardized as exactly 3.785411784 liters. The larger imperial gallon (4.54609 L) is still used in the UK and Canada, so always confirm which gallon is meant.

Quick Conversion Tips

For quick approximations, remember: 1 US gallon ≈ 3.8 L, so 1 L ≈ 0.26 gal. To estimate gallons from liters, divide by 4 and add a bit: 20 L ÷ 4 = 5, actual is 5.28 gal. For precise results, use the exact factor of 3.785412.