Convert liters to gallons (L to gal)
To convert liters to gallons, divide the value in liters by 3.785411784 — the same as multiplying by about 0.264172. You need it to compare fuel prices and tank sizes, water heaters, aquariums and paint quantities between metric and US units. This liters to gallons converter works both ways: type liters or gallons into either box above and the other box, the worked formula and the chart below update as you type.
The liter (L), or litre, is a metric unit of volume. Since 1964 it has been defined as exactly one cubic decimeter, or 1,000 cubic centimeters. Liters are used for fuel, bottled drinks, engine sizes and fridge capacity in most of the world. One liter is 0.264172 US gallons.
The US liquid gallon (gal) is 231 cubic inches, which is exactly 3.785411784 liters. It is smaller than the imperial (UK) gallon of 4.54609 liters. Going the other way, one US gallon equals 3.78541 liters. In the US it measures fuel at the pump, milk, paint, water heaters and fish tanks.
How to convert liters to gallons with this tool
- Type a number into the Liters (L) box — it starts at 50 L as an example.
- Read the answer in the US gallons (gal) box and in the result panel, which also shows the formula with your number.
- To go the other way, type into the gallons box, or press the swap button to open the Gallons to Liters converter with your value carried over.
- Choose how many decimal places you want, or tap a quick value such as 0.5 L, 2 L, 5 L.
- Press Copy result to paste the conversion into a message, spreadsheet or note.
Liters to Gallons converter features
Converts both ways
Type in the liters box to get gallons, or in the gallons box to get liters. The other box follows instantly.
Exact factor
Calculations use 1 gal = 3.785411784 L, and rounding is applied only to the answer you see — choose Auto or 0–10 decimal places.
Formula with your number
The working is shown under the result, for example 50 L ÷ 3.785411784 = 13.2086 gal, so you can check it or copy the method.
Quick values and chart
Tap common values like 0.5 L, 2 L, 5 L, or read the liters-to-gallons table further down this page.
UK gallons as well
The imperial-gallon figure is shown under the US answer, so British fuel and tank figures are covered too.
Liters to Gallons formula
The formula is gal = L ÷ 3.785411784. It is exact because a US gallon is 231 cubic inches, which is exactly 3.785411784 liters.
The reverse formula is L = gal × 3.785411784 — or use the Gallons to Liters converter. Three worked examples:
- A 50 L car fuel tank: 50 L ÷ 3.785411784 = 13.2086 gal
- A 20 L water jug: 20 L ÷ 3.785411784 = 5.2834 gal
- A 200 L oil drum: 200 L ÷ 3.785411784 = 52.8344 gal
US gallons vs UK (imperial) gallons
This page uses the US liquid gallon of 3.785411784 L, the gallon on American fuel pumps and milk jugs. The UK — and older Canadian and Australian sources — use the imperial gallon of exactly 4.54609 L, about 20% bigger. Mixing the two up is the most common gallon mistake: 10 L = 2.6417 gal, but 10 L = 2.1997 UK gal.
Liters to Gallons quick reference
The values people look up most often, worked out with the exact factor:
- 1 L = 0.264172 gal
- 1 gal = 3.78541 L
- 0.5 L = 0.1321 gal
- 2 L = 0.5283 gal
- 5 L = 1.3209 gal
- 10 L = 2.6417 gal
Quick tip: Divide by 4 for a rough count of US gallons (about 5% low): 40 L ≈ 10 gal, versus the exact 10.5669 gal.
Related conversions: Liters to Cups, ML to Oz and the full volume converter.
Liters to Gallons conversion table
Values in gallons are rounded to 4 decimal places (more for very small numbers). For any value not listed, type it into the converter above.
| L | gal | L | gal |
|---|---|---|---|
| 1 | 0.2642 | 30 | 7.9252 |
| 2 | 0.5283 | 35 | 9.246 |
| 3 | 0.7925 | 40 | 10.5669 |
| 4 | 1.0567 | 45 | 11.8877 |
| 5 | 1.3209 | 50 | 13.2086 |
| 6 | 1.585 | 55 | 14.5295 |
| 7 | 1.8492 | 60 | 15.8503 |
| 8 | 2.1134 | 65 | 17.1712 |
| 9 | 2.3775 | 70 | 18.492 |
| 10 | 2.6417 | 75 | 19.8129 |
| 11 | 2.9059 | 80 | 21.1338 |
| 12 | 3.1701 | 85 | 22.4546 |
| 13 | 3.4342 | 90 | 23.7755 |
| 14 | 3.6984 | 95 | 25.0963 |
| 15 | 3.9626 | 100 | 26.4172 |
| 16 | 4.2268 | 150 | 39.6258 |
| 17 | 4.4909 | 200 | 52.8344 |
| 18 | 4.7551 | 250 | 66.043 |
| 19 | 5.0193 | 500 | 132.086 |
| 20 | 5.2834 | 1,000 | 264.1721 |
| 25 | 6.6043 |
Liters to Gallons FAQ
How many US gallons is 10 L?
10 liters is 2.6417 US gallons: 10 L ÷ 3.785411784 = 2.6417 gal.
How do I convert liters to gallons?
Divide the value in liters by 3.785411784 — the same as multiplying by about 0.264172. For example, 100 L ÷ 3.785411784 = 26.4172 gal. To convert back, multiply the value in gallons by 3.785411784 — or use the Gallons to Liters converter.
How many liters are in one US gallon?
One US gallon is 3.7854 liters, because 1 gal × 3.785411784 = 3.7854 L.
What is 100 liters in gallons?
How many UK gallons is a liter?
One liter is 0.2642 US gallons but only 0.219969 imperial (UK) gallons, because the imperial gallon is larger (4.54609 L). The converter shows the UK figure under the main result.