Liters to gallons
One liter is 0.264172 US gallons. Type an amount in liters to see it in US gallons.
How to convert liters to US gallons
US gallons = liters ÷ 3.785411784
For example, 20 L is 5.28 gal. The US gallon is defined as exactly 3.785411784 liters. The UK, or imperial, gallon is larger: exactly 4.54609 liters. Check which one you need before converting, because the difference is 20%.
A quick way to do it in your head
For US gallons, divide by 4 and add a twentieth.
- 20 L: 5, plus 0.25 is 5.25 gal. The true answer is 5.28 US gal.
- 40 L: 10, plus 0.5 is 10.5 gal. The true answer is 10.57 US gal.
- 60 L: 15, plus 0.75 is 15.75 gal. The true answer is 15.85 US gal.
For UK gallons, divide by 4.5: 45 L is 10 UK gallons, near enough.
Liters to US gallons table
| Liters | US gallons | UK gallons |
|---|---|---|
| 1 L | 0.26 gal | 0.22 gal |
| 2 L | 0.53 gal | 0.44 gal |
| 3 L | 0.79 gal | 0.66 gal |
| 4 L | 1.06 gal | 0.88 gal |
| 5 L | 1.32 gal | 1.1 gal |
| 10 L | 2.64 gal | 2.2 gal |
| 15 L | 3.96 gal | 3.3 gal |
| 20 L | 5.28 gal | 4.4 gal |
| 25 L | 6.6 gal | 5.5 gal |
| 30 L | 7.93 gal | 6.6 gal |
| 40 L | 10.57 gal | 8.8 gal |
| 50 L | 13.21 gal | 11 gal |
| 60 L | 15.85 gal | 13.2 gal |
| 70 L | 18.49 gal | 15.4 gal |
| 80 L | 21.13 gal | 17.6 gal |
| 100 L | 26.42 gal | 22 gal |
| 200 L | 52.83 gal | 43.99 gal |
| 500 L | 132.09 gal | 109.98 gal |
| 1000 L | 264.17 gal | 219.97 gal |
Amounts you are likely to meet
| What | Liters | US gallons |
|---|---|---|
| A large bottle of soft drink | 2 L | 0.53 gal |
| An office water cooler bottle | 18.9 L | 4.99 gal |
| A small car fuel tank | 45 L | 11.89 gal |
| A large car fuel tank | 70 L | 18.49 gal |
| A bath, filled | 150 L | 39.63 gal |
L/100 km to miles per gallon
Fuel economy is written two ways. Most of the world gives liters used per 100 kilometers, where a lower number is better. The United States and the United Kingdom give miles per gallon, where a higher number is better. Because one is the inverse of the other, you divide a constant by the figure you have.
US mpg = 235.215 ÷ (L/100 km)
UK mpg = 282.481 ÷ (L/100 km)
| L/100 km | US mpg | UK mpg |
|---|---|---|
| 4 | 58.8 | 70.6 |
| 5 | 47 | 56.5 |
| 6 | 39.2 | 47.1 |
| 7 | 33.6 | 40.4 |
| 8 | 29.4 | 35.3 |
| 9 | 26.1 | 31.4 |
| 10 | 23.5 | 28.2 |
| 12 | 19.6 | 23.5 |
| 15 | 15.7 | 18.8 |
The same car has a higher mpg figure in the United Kingdom than in the United States, only because the UK gallon is bigger.
To go the other way, use gallons to liters. For other units, see the unit converter.
Questions
How many US gallons is 1 liter?
0.264172 gal.
How many US gallons is 5 L?
1.32 gal.
How many US gallons is 10 L?
2.64 gal.
How many US gallons is 50 L?
13.21 gal.
How many liters are in a US gallon?
3.785411784 liters.
How many liters are in a UK gallon?
4.54609 liters.
Is it liters or litres?
“Liter” is the American spelling and “litre” is used in most other English-speaking countries. The volume is the same.