How to convert liters to US gallons
Every liter is 0.2642 US gallons, so the conversion is a single multiplication:
Worked example: 25 L → 25 × 0.264172 = 6.6043 gal.
Quick mental estimate: Divide by 3.8: 25 ÷ 3.8 ≈ 6.5789 gal (exact: 6.6043).
Liters to US gallons conversion table
| Liters (L) | US gallons (gal) |
|---|---|
| 1 L | 0.2642 gal |
| 2 L | 0.5283 gal |
| 3 L | 0.7925 gal |
| 5 L | 1.3209 gal |
| 10 L | 2.6417 gal |
| 15 L | 3.9626 gal |
| 20 L | 5.2834 gal |
| 25 L | 6.6043 gal |
| 50 L | 13.2086 gal |
| 75 L | 19.8129 gal |
| 100 L | 26.4172 gal |
| 200 L | 52.8344 gal |
| 250 L | 66.043 gal |
| 500 L | 132.09 gal |
| 1,000 L | 264.17 gal |
Values rounded to four decimals. For a value that is not in the table, use the converter above — it accepts decimals and negative numbers.
When you need this conversion
- Recipes, especially between American cup-based measures and metric millilitres.
- Fuel consumption and tank capacities, quoted in gallons in the United States and litres almost everywhere else.
- Paint, chemicals and garden products, sold in different container sizes by region.
Getting it right
The US gallon (3.785 L) and the UK imperial gallon (4.546 L) are different units sharing a name. A figure taken from a British source is about 20 % larger than the same number of US gallons — always check which one is meant.
Sanity-check the direction of the result before you use it. One liter is 0.2642 US gallons, so converting liters to US gallons should make the number smaller. If it moved the other way, the conversion was applied backwards — the reverse converter is one click away.
About the units
Liter (L)
The liter is one cubic decimeter, or 1 000 milliliters. Drinks, fuel, engine displacement and household containers are measured in liters.
US gallon (gal)
The US gallon is exactly 3.785411784 liters. Fuel, milk and paint are sold by the gallon in the United States. The UK imperial gallon is larger, at 4.546 liters, so check which one a figure refers to.
Frequently asked questions
How many US gallons are in 1 liter?
1 liter equals 0.2642 US gallons. To convert any value, multiply the number of liters by 0.264172.
How do I convert liters to US gallons in my head?
Divide by 3.8: 25 ÷ 3.8 ≈ 6.5789 gal (exact: 6.6043).
Is the L to gal conversion exact?
1 US gallon is exactly 3.785411784 L, so 0.264172 is the rounded reciprocal.
How do I convert liters to US gallons in Excel or Google Sheets?
Put the value in A1 and use =A1*0.264172. Both Excel and Google Sheets also have a built-in function, =CONVERT(A1,"l","gal"), which avoids typing the factor by hand.
How many decimal places should I keep?
For everyday use two decimals are plenty. Keep four if the result feeds another calculation, and round only at the very end — rounding intermediate steps is the most common reason a result comes out slightly wrong.