Unit Converter
Gallons (US) to Liters Converter
Convert US gallons to liters instantly. 1 gal = 3.7854 L. Free, accurate, no signup needed.
Liters
3.7854 L
1 gal = 3.7854 L
Gallons (US) to Liters formula
L = gal × 3.7854The US gallon and liter measure liquid volume. One US gallon equals 3.7854 liters—a fixed conversion ratio used worldwide for fuel, beverages, and cooking. The liter became the metric standard in the 1960s, while the US gallon is defined by imperial measurements.
Gallons (US) to Liters conversion table
| Gallons (US) (gal) | Liters (L) |
|---|---|
| 1 gal | 3.7854 L |
| 2 gal | 7.5708 L |
| 3 gal | 11.3562 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
| 20 gal | 75.7082 L |
| 25 gal | 94.6353 L |
| 50 gal | 189.27 L |
| 100 gal | 378.54 L |
| 500 gal | 1892.71 L |
| 1000 gal | 3785.41 L |
When you need to convert gallons (us) to liters
- Converting fuel tank capacity when comparing vehicle models across US and metric countries
- Scaling cooking and baking recipes from US measurements to metric for international cookbooks
- Determining pool or aquarium volume in liters when given specifications in US gallons
- Calculating beverage quantities for large events or commercial kitchens
Frequently asked questions
How many liters is 1 gallon?
1 US gallon equals 3.7854 liters. This is the exact conversion ratio used for all volume conversions between these units.
Why is the conversion factor 3.7854?
The US gallon is legally defined as 231 cubic inches. When converted to the metric system, this equals precisely 3.7854 liters.
Is this for US gallons or imperial gallons?
This converter uses US gallons (3.7854 L each). UK imperial gallons are larger at 4.54609 L—check your source before converting.