Liters to Gallons Converter

Why You Are Here

You are most likely here for one of three reasons. You are driving or renting a car outside the United States and the fuel gauge, tank capacity, or fuel economy figures are in liters, but you are used to thinking in gallons. You are reading a European recipe or product label that lists a liquid volume in liters and need to know how many gallons that is to match your measuring equipment. Or you are comparing the capacity of a water tank, aquarium, fuel drum, or industrial container that is specified in liters against your local gallon-based reference.

The most important thing to know before converting is whether you need US gallons or Imperial gallons since they are different measurements. A 50-liter tank holds 13.2 US gallons but only 11.0 Imperial gallons — a nearly 20 percent difference.

The Conversion Factors and Formulas

Conversion	Factor	Notes
1 liter to US gallons	0.264172 gal	Standard for United States
1 liter to Imperial gallons	0.219969 imp gal	Standard for UK, Canada, Australia
1 US gallon to liters	3.785411784 L	Reverse conversion
1 Imperial gallon to liters	4.54609 L	Reverse conversion

Formula — Liters to US Gallons

US Gallons = Liters x 0.264172

Example: Convert 40 liters to US gallons
40 x 0.264172 = 10.567 US gallons

Formula — Liters to Imperial Gallons

Imperial Gallons = Liters x 0.219969

Example: Convert 40 liters to Imperial gallons
40 x 0.219969 = 8.799 Imperial gallons

The 40-liter fuel tank fills to 10.57 US gallons but only 8.8 Imperial gallons. Using the wrong conversion when calculating fuel costs or tank capacity creates a nearly 20 percent error.

Common L to gal Conversion Examples

Liters to US Gallons

Liters (L)	US Galoons (gal)	Common Context
1 L	0.264 gal	One liter, standard beverage bottle
2 L	0.528 gal	Two liters, large soda bottle
4 L	1.057 gal	Four liters, just over one gallon
5 L	1.321 gal	Five liters, small fuel can
10 L	2.642 gal	Ten liters, portable fuel container
20 L	5.283 gal	Twenty liters, small fuel drum
30 L	7.925 gal	Thirty liters, compact car fuel tank
40 L	10.567 gal	Forty liters, average car fuel tank
50 L	13.209 gal	Fifty liters, large car fuel tank
60 L	15.850 gal	Sixty liters, SUV fuel tank
75 L	19.813 gal	Seventy-five liters, large SUV tank
100 L	26.417 gal	One hundred liters, large storage container
200 L	52.834 gal	Two hundred liters, standard oil drum

Liters to Imperial Gallons

Liters (L)	Imperial Gallons (imp gal)
1 L	0.220 imp gal
5 L	1.100 imp gal
10 L	2.200 imp gal
20 L	4.399 imp gal
40 L	8.799 imp gal
50 L	10.998 imp gal

US Gallons vs Imperial Gallons — Which Do You Need?

Use US Gallons if	Use Imperial Gallons if
You are in the United States or a US territory	You are in the UK, Canada, Australia, Ireland, or New Zealand
You are using an American vehicle, appliance, or pool	You are using a British vehicle or older UK product label
You are calculating fuel cost at a US gas station	You are comparing UK fuel economy figures
American recipes and product labels apply	Older British recipes or product specs apply

Practical example: A European car with a 50-liter tank holds 13.2 US gallons or 11.0 Imperial gallons. If filling at a US gas station, use the US gallon figure for cost calculation.

Fuel Economy Context

European vehicles and most international markets measure fuel economy in liters per 100 kilometers. American vehicles measure fuel economy in miles per gallon. Converting between the two requires both a liters-to-gallons conversion and a kilometers-to-miles conversion simultaneously.

Liters per 100 km	Approx. Miles per US Gallon	Fuel Effeciency Level
4 L/100km	~59 mpg	Very fuel efficient — hybrid or small diesel
6 L/100km	~39 mpg	Fuel efficient — small petrol car
8 L/100km	~29 mpg	Average — mid-size petrol car
10 L/100km	~24 mpg	Below average — larger petrol or light SUV
12 L/100km	~20 mpg	Poor — large SUV or performance car
15 L/100km	~16 mpg	Very poor — large truck or older performance car

Note: The lower the liters per 100 km number, the more fuel efficient the vehicle. This is the opposite of miles per gallon where a higher number means better efficiency.

Common Mistakes to Avoid

Using US Gallons When You Need Imperial Gallons

If you are in the UK, Canada, or Australia and convert a liter value using the US gallon factor of 0.264172, your result will be approximately 20 percent too high. A 50-liter tank converted using US gallons gives 13.2 gallons when the correct Imperial answer is 11.0 gallons. Always confirm which gallon system applies to your country and context before converting.

Dividing by 3.8 Instead of 3.78541

Many quick-reference guides suggest dividing liters by 3.8 to get US gallons. This is a rounded approximation that creates an error of 0.005 gallons per liter. Over a 50-liter tank that is a 0.25-gallon error, which at current fuel prices is a meaningful miscalculation for cost estimation. Always use 0.264172 for multiplication or 3.78541 for division to get precise results.

Confusing Liters of Liquid with Liters of Engine Displacement

Car engine size is measured in liters but this has nothing to do with volume conversion. A 2.0-liter engine does not hold 2.0 liters of fuel. Engine displacement in liters refers to the total swept volume of all cylinders. Do not use this converter for engine size comparisons.

Quick Reference Values

Liters to US Gallons

Liters (L)	US Gallons (gal)
1 L	0.264 gal
2 L	0.528 gal
5 L	1.321 gal
10 L	2.642 gal
20 L	5.283 gal
30 L	7.925 gal
40 L	10.567 gal
50 L	13.209 gal
75 L	19.813 gal
100 L	26.417 gal

Liters to Imperial Gallons

Liters (L)	Imperial Gallons (imp gal)
1 L	0.220 imp gal
5 L	1.100 imp gal
10 L	2.200 imp gal
20 L	4.399 imp gal
40 L	8.799 imp gal
50 L	10.998 imp gal

Frequently Asked Questions

How many gallons are in a liter?

There are 0.264172 US gallons in one liter, or 0.219969 Imperial gallons in one liter. The result depends on which gallon standard applies to your situation. Use this Liters to Gallons Converter to calculate any liter value for both US and Imperial gallons instantly.

What is the formula to convert liters to US gallons?

Multiply the number of liters by 0.264172. For example, 10 liters multiplied by 0.264172 equals 2.64172 US gallons. Alternatively, divide the liters by 3.78541 to get the same result.

What is 1 liter in gallons?

1 liter equals 0.264172 US gallons or 0.219969 Imperial gallons. In practical terms, a standard 1-liter water bottle is roughly a quarter of a US gallon.

How many liters is 5 gallons?

5 US gallons equals 18.927 liters. 5 Imperial gallons equals 22.730 liters. This is a common reference for portable fuel cans, water cooler jugs, and paint containers.

What is 40 liters in gallons?

40 liters equals 10.567 US gallons or 8.799 Imperial gallons. This is a common fuel tank capacity for compact and mid-size vehicles in European markets.

What is the difference between US gallons and Imperial gallons?

A US gallon equals 3.785 liters while an Imperial gallon equals 4.546 liters, making the Imperial gallon about 20 percent larger. The difference originated after the United States declared independence and the two countries developed separate measurement standards. The UK redefined the gallon in 1824 making it larger while the US retained the older wine gallon definition.

How do I convert liters per 100 km to miles per gallon?

Divide 235.215 by the liters per 100 km figure to get the approximate miles per US gallon equivalent. For example, 6 liters per 100 km is approximately 235.215 divided by 6 which equals 39.2 miles per gallon. This Liters to Gallons Converter handles the volume portion of the calculation but the full fuel economy conversion requires this additional formula.

Can I use this converter for aquarium and pool capacity?

Yes. This Liters to Gallons Converter uses the exact conversion factors for both US and Imperial gallons, which are the same standards used by aquarium product labels, pool chemical dosing instructions, and water treatment guidelines regardless of whether the container capacity is specified in liters or gallons.

Search