How 1 gal becomes 3.7854 l
Multiply the US gallons by 3.78541. With 1 gal plugged in, the formula l = gal × 3.78541 reads like this:
The factor between US gallons and liters never changes, so the same step works for any number.
Gallons to Liters near 1 gal
| US gallons (gal) | Liters (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 | 11.3562 l |
| 3.5 gal | 13.2489 l |
| 4 gal | 15.1416 l |
| 4.5 gal | 17.0344 l |
| 5 gal | 18.9271 l |
Values are rounded to six decimals below 1, four decimals up to 1,000 and two decimals above. The converter above shows more digits.
3.7854 l back to US gallons
The other way round, 3.7854 l is 0.999997 gal: 3.7854 × 0.264172 ≈ 0.999997 gal. The Liters to Gallons converter does this for any number.
More Gallons to Liters values
Any other number? The Gallons to Liters converter has a chart of common values, and the Volume Converter handles every volume unit at once.
Frequently asked questions
How many liters is 1 gal?
1 US gallon is 3.7854 liters.
What is the formula for 1 Gallons to Liters?
Multiply by 3.78541: 1 × 3.78541 ≈ 3.7854 l.
What is 1.5 gal in liters?
1.5 US gallons is 5.6781 liters, which is 1.8927 l more than 1 gal.
How do I get from 3.7854 l back to US gallons?
Run the formula the other way: 3.7854 × 0.264172 ≈ 0.999997 gal. Multiply by 0.264172, and you are back at 0.999997 gal.