How to convert US gallons to liters
Multiply the number of US gallons by 3.78541. That is all there is to it, because the factor between US gallons and liters never changes.
Formula
l = gal × 3.78541
Example: 5 US gallons × 3.78541 = 18.9271 liters.
Gallons to Liters chart
| US gallons (gal) | Liters (l) |
|---|---|
| 0.5 gal | 1.8927 l |
| 1 gal | 3.7854 l |
| 2 gal | 7.5708 l |
| 3 gal | 11.3562 l |
| 4 gal | 15.1416 l |
| 5 gal | 18.9271 l |
| 10 gal | 37.8541 l |
| 15 gal | 56.7812 l |
| 20 gal | 75.7082 l |
| 25 gal | 94.6353 l |
| 50 gal | 189.2706 l |
| 100 gal | 378.5412 l |
| 500 gal | 1,892.71 l |
| 1,000 gal | 3,785.41 l |
Values are rounded to at most four decimals. The converter above shows more digits.
About the units
One US gallon is 3.785411784 liters.
Need the other direction? Use the Liters to Gallons converter. For every volume unit at once, open the Volume Converter.
Frequently asked questions
How many liters are in a US gallon?
There are 3.7854 liters in one US gallon.
How do I convert US gallons to liters?
Multiply the number of US gallons by 3.78541. For example: 5 US gallons × 3.78541 = 18.9271 liters.
What is 20 US gallons in liters?
20 US gallons equals 75.7082 liters.