Fast answers, clean math
Gallons to liters converter
Enter US gallons and get liters instantly. This page also shows the formula so you can sanity-check the result.
Unit converter
Convert US gallons to liters
Formula
US gallons to liters (gal → L)
The conversion is based on an exact definition: 1 US gallon equals exactly 3.785411784 liters.
Formula: liters = gallons × 3.785411784
If you need the reverse, divide liters by 3.785411784: gallons = liters ÷ 3.785411784.
| US gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.7854 |
| 2 | 7.5708 |
| 5 | 18.9271 |
| 10 | 37.8541 |
| 20 | 75.7082 |
| 50 | 189.2706 |
| 100 | 378.5412 |