How to convert US gallons to liters
Use the converter above or multiply by the factor: liters = US gallons × 3.78541. So 1 US gal = 3.78541 L. Enter a value in US gallons and the converter shows the result in liters instantly — free, no sign-up.
Worked examples
- 1 gal = 3.785 L
- 10 gal = 37.85 L
- 100 gal = 378.54 L
US gallons to liters conversion table
| US gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.785 |
| 2 | 7.571 |
| 5 | 18.93 |
| 10 | 37.85 |
| 20 | 75.71 |
| 50 | 189.27 |
| 100 | 378.54 |
| 500 | 1,892.71 |
| 1000 | 3,785.41 |
Practical use: fuel, water containers, car tanks.
Frequently asked questions
How many L are in 1 gal?
1 US gal = 3.78541 L.
What is the formula to convert gal to L?
Multiply US gallons by 3.78541.
How do I convert back from L to gal?
1 L = 0.26417 gal.
What is 5 gal in L?
5 gal = 18.92705 L.