1 gal = 3.78541 L
1 US gallon equals 3.78541 liters. To convert US gallons to liters, multiply the US gallon value by 3.78541. For quick reference: 1 gal = 3.78541 L, 5 gal = 18.9271 L, 10 gal = 37.8541 L, 100 gal = 378.541 L.
Liters = US gallons × 3.78541Start with your value in US gallons.
Multiply the US gallon value by 3.78541. This is the exact conversion factor from US gallons to liters.
The product is your value in liters. For example, 5 gal × 3.78541 = 18.9271 L.
The exact factor from US gallons to liters is 3.78541.
Liters = US gallons × 3.78541
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| US gallons (gal) | Liters (L) |
|---|---|
| 0.1 gal | 0.37854 L |
| 0.25 gal | 0.94635 L |
| 0.5 gal | 1.8927 L |
| 1 gal | 3.7854 L |
| 1.5 gal | 5.6781 L |
| 2 gal | 7.5708 L |
| 2.5 gal | 9.4635 L |
| 3 gal | 11.356 L |
| 4 gal | 15.142 L |
| 5 gal | 18.927 L |
| 6 gal | 22.712 L |
| 7 gal | 26.498 L |
| 8 gal | 30.283 L |
| 9 gal | 34.069 L |
| 10 gal | 37.854 L |
| 12 gal | 45.425 L |
| 15 gal | 56.781 L |
| 20 gal | 75.708 L |
| 25 gal | 94.635 L |
| 30 gal | 113.56 L |
| 40 gal | 151.42 L |
| 50 gal | 189.27 L |
| 60 gal | 227.12 L |
| 75 gal | 283.91 L |
| 100 gal | 378.54 L |
| 125 gal | 473.18 L |
| 150 gal | 567.81 L |
| 200 gal | 757.08 L |
| 250 gal | 946.35 L |
| 300 gal | 1135.6 L |
| 400 gal | 1514.2 L |
| 500 gal | 1892.7 L |
| 600 gal | 2271.2 L |
| 750 gal | 2839.1 L |
| 1000 gal | 3785.4 L |
| 1500 gal | 5678.1 L |
| 2000 gal | 7570.8 L |
| 2500 gal | 9463.5 L |
| 3000 gal | 11356 L |
| 4000 gal | 15142 L |
| 5000 gal | 18927 L |
| 7500 gal | 28391 L |
| 10000 gal | 37854 L |
| 15000 gal | 56781 L |
| 20000 gal | 75708 L |
| 25000 gal | 94635 L |
| 30000 gal | 113562 L |
| 40000 gal | 151416 L |
| 50000 gal | 189271 L |
| 100000 gal | 378541 L |
A standard US milk jug holds 1 gal. An average car's fuel tank is 12–16 gal. In liters, that gives you: 1 gal = 3.78541 L, 10 gal = 37.8541 L, 100 gal = 378.541 L.
The US liquid gallon equals exactly 3.785411784 liters, defined as 231 cubic inches. It is the standard fuel and milk unit in the United States. The US gallon is about 16.7% smaller than the UK (imperial) gallon (4.54609 L), so quoting fuel economy as 'mpg' without specifying the gallon can mislead by a wide margin.
The liter (L) is a metric unit of volume defined as exactly one cubic decimeter (1 dm³). Although not an SI base unit (the SI unit of volume is the cubic meter), it is the most common metric volume unit in everyday life, used for beverages, fuel, and chemistry. One liter of pure water at 4 °C weighs almost exactly one kilogram.