EngiRef / Volume conversion
Convert Gallons (US) to Liters (gal to L)
1 gal = 3.78541178 L. Convert gallons (US) to liters with the exact factor, a common-values table and a free converter.
Conversion factor
L = gal × 3.78541178
1 gal = 3.78541178 L
Multiply by 3.78541178 L to go from gallons (US) to liters, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
gal to L table
| Gallons (US) (gal) | Liters (L) |
|---|---|
| 1 gal | 3.78541178 L |
| 2 gal | 7.57082357 L |
| 5 gal | 18.9270589 L |
| 10 gal | 37.8541178 L |
| 20 gal | 75.7082357 L |
| 50 gal | 189.270589 L |
| 100 gal | 378.541178 L |
Every figure is computed at build time by the site’s own converter from the volume unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many liters are in one gallon (US)?
One gallon (US) is 3.78541178 L, so 100 gal is 378.541178 L.
What is the formula to convert gallons (US) to liters?
L = gal × 3.78541178. Multiply the value in gallons (US) by 3.78541178 to get liters.
How do I convert liters back to gallons (US)?
gal = L × 0.264172052, so 1 L is 0.264172052 gal. The L to gal page carries the same table in that direction.