US gallons to Litres (gal to L)
1 gal = 3.785412 L. Multiply US gallons by 3.785412; the box below does it both ways.
litres
3 gal = 11.3562 L · litres to US gallons page
How to convert US gallons to litres
- Take the value in US gallons.
- Multiply by 3.785412 (because 1 gal = 3.785412 L).
- Example: 3 gal × 3.785412 = 11.3562 L.
- Going back: divide by 3.785412, or multiply by 0.2641721.
Where this comes up
Multiply US gallons by 3.785. A 5-gallon water can is 18.9 L (the Indian 20 L jar is 5.28 gal). For imperial gallons multiply by 4.546.
| gal | L |
|---|---|
| 0.5 | 1.8927 |
| 1 | 3.7854 |
| 2 | 7.5708 |
| 3 | 11.3562 |
| 5 | 18.9271 |
| 10 | 37.8541 |
| 12 | 45.4249 |
| 15 | 56.7812 |
| 20 | 75.7082 |
| 25 | 94.6353 |
| 50 | 189.2706 |
| 100 | 378.5412 |
Questions people ask
How many litres are in 1 US gallon?
1 gal = 3.785412 L. To convert, multiply the US gallon value by 3.785412.
What is 12 gal in L?
12 gal is 45.4249 L.
How do I convert litres back to US gallons?
Divide by 3.785412, or multiply by 0.2641721: 1 L = 0.2641721 gal.
More volume conversions
Litres to US gallons (L to gal) · ml to fl oz · fl oz to ml · tsp to ml · ml to tsp · tbsp to ml · all converters
Factors are the exact international definitions; last checked 2026-10-10.