Gallons to liters
1 gal = 3.785411784 L. Type in either box to convert both ways, in exact decimals.
The formula
1 gal = 3.785411784 L
To convert US gallons to litres, multiply by 3.785411784.
A US gallon is exactly 3.785411784 litres. A UK (imperial) gallon is bigger: exactly 4.54609 litres. The table shows both.
Common values
| US gallons | Litres (US gal) | Litres (UK gal) |
|---|---|---|
| 1 | 3.79 | 4.55 |
| 2 | 7.57 | 9.09 |
| 3 | 11.36 | 13.64 |
| 5 | 18.93 | 22.73 |
| 10 | 37.85 | 45.46 |
| 12 | 45.42 | 54.55 |
| 15 | 56.78 | 68.19 |
| 20 | 75.71 | 90.92 |
| 50 | 189.27 | 227.3 |
| 100 | 378.54 | 454.61 |
Worked out by Figure's own converter, rounded to 2 decimal places.
How to use it
Type a number in the top box and the answer appears in the bottom one as you type; type in the bottom box to go the other way. The round button swaps the units, the unit names open every other unit, and the Every unit list shows the same amount in all of them. Sums work in the boxes too. Nothing is uploaded and there is no account.
Good for:
- Fuel and fuel tanks
- Water tanks, butts and aquariums
- Paint and garden products
- Milk and drinks
- Pools and hot tubs
Questions
How many litres is 1 US gallon?
1 US gallon is exactly 3.785411784 litres.
Is a UK gallon the same as a US gallon?
No. A UK gallon is 4.54609 litres and a US gallon is 3.785411784 litres, so a UK gallon is about 1.201 US gallons.