ToolNestGallons to Liters Converter
Convert gallons to liters instantly with our free volume converter. 1 gallon = 3.785412 L — type any value below and the result updates live.
Gallons to Liters Formula
Liters = Gallons × 3.785412 (Gallons = Liters × 0.264172)
Volume conversion for cooking, fuel, and engineering — metric liters and milliliters alongside US customary gallons, quarts, pints, cups, and fluid ounces.
Gallons to Liters Conversion Table
| Gallons | Liters | |
|---|---|---|
| 1 gal | = | 3.785412 L |
| 2 gal | = | 7.570824 L |
| 5 gal | = | 18.927059 L |
| 10 gal | = | 37.854118 L |
| 25 gal | = | 94.635295 L |
| 50 gal | = | 189.270589 L |
| 100 gal | = | 378.541178 L |
About Gallons and Liters
A US gallon is 128 fluid ounces (3.78541 liters) — the unit for gasoline, milk, and water heaters across America.
A liter is one cubic decimeter — roughly a quart and a bit. The metric standard for beverages, fuel, and engine displacement.
Frequently Asked Questions
How many liters are in one gallon?
One gallon equals 3.785412 liters. Multiply any gallons value by 3.785412 to convert it.
What is the formula for converting gallons to liters?
Liters = Gallons × 3.785412. To reverse it: gallons = liters × 0.264172.
How do I convert liters back to gallons?
Divide the liters value by 3.785412 (equivalently, multiply by 0.264172). Or use our liters-to-gallons converter going the other way.
Which is bigger, a gallon or a liter?
A gallon is bigger — one gallon equals 3.785412 liters.