Converting Liters to US Gallons (L to gal) is one of the most common calculations for travelers and drivers. While most of the world sells gasoline (petrol) and beverages in Liters, the United States relies on Gallons. If you are driving a US-spec car in Europe or Canada or trying to compare the price of gas across the border, understanding this conversion is vital for your wallet.
Master Volume Converter
The Formula
Divide the Liters by 3.785:
L ÷ 3.785 = gal
Example
If you fill your car with 40 Liters of fuel:
40 ÷ 3.785 = 10.57 gal
International Fuel & Fluid Volume Insights
A liter is roughly one-quarter of a gallon. If you are looking at a 1-liter bottle of water, remember that it would take nearly four of those bottles to fill up a standard gallon milk jug.
Frequently Asked Questions
One liter is equivalent to 0.264172052 US liquid gallons. Because the gallon is a much larger unit, your result in gallons will always be a smaller number than the amount of liters you started with. This conversion is specifically for the US liquid gallon standard.
In almost every country outside the U.S., fuel is sold by the liter. If you are trying to calculate your fuel costs or “miles per gallon” while driving abroad, you first need to convert those liters into gallons. Multiplying the liter amount by 0.264 will give you the U.S. equivalent.
If you don’t have a calculator, divide the number of liters by 4. If you have 40 liters of gas, 40 divided by 4 is 10 gallons. The real answer is 10.56 gallons, so the “divide by 4” rule gives you a very close estimate for quick travel math.