How to convert liters to gallons
- 1 Type a value in the litres box; the gallons appear as you type.
- 2 Or type in the gallons box to convert the other way.
- 3 Choose US or UK (imperial) gallons.
- 4 Use the conversion table below for common values, or copy the result.
US or imperial gallons?
Always check which gallon is meant. American sources use the US gallon of 3.785 litres; older British sources and UK miles per gallon figures use the imperial gallon of 4.546 litres. The difference is about 20%, enough to throw out a fuel or tank calculation.
Converting the other way? Use Gallons to Liters. For trip distances, see KM to Miles.
- Fuel tank sizes in car brochures are usually in litres, even in the UK.
- Pumps and tanks sold in the US are rated in US gallons per minute or hour.
- Paint coverage is often given per litre in metric countries and per gallon in the US.
Features
US and UK gallons
Switch between the two; the chart updates too.
Exact definitions
3.785411784 L per US gallon and 4.54609 L per UK gallon.
Two-way
Type gallons to get litres.
When to use it
Fuel
A 50 litre car tank holds 13.2 US gallons or 11 UK gallons. Working out the fuel bill? Use the Gallons to Liters converter for US prices.
Water and tanks
A 1,000 litre tank is 264.2 US gallons.
Drinks and cooking
A 2 litre bottle is 0.53 US gallons; for smaller amounts see Ounces to Grams.
Water use and bills
Water tanks, pumps and bills in some countries use gallons; a family using 500 litres a day uses about 132 US gallons. Compare with tank capacity before buying a pump.
Related Unit tasks
Frequently asked questions
How do I convert liters to gallons?
Divide by 3.785411784 for US gallons, or by 4.54609 for UK gallons. 20 L is 5.28 US gallons or 4.40 UK gallons.
How many gallons is 1 liter?
1 litre is 0.2642 US gallons or 0.22 UK gallons.
Why are US and UK gallons different?
The US kept the old wine gallon of 231 cubic inches, while Britain defined the imperial gallon in 1824 as the volume of 10 pounds of water, which is about 20% larger.
Which gallon does my car use?
US fuel prices and mpg use US gallons; UK mpg figures use imperial gallons, although UK fuel is sold by the litre.
How many litres is 5 gallons?
5 US gallons is 18.93 litres; 5 UK gallons is 22.73 litres.
Is it liters or litres?
Both: liters is the US spelling and litres the British spelling.
How many litres in a water cooler bottle?
A standard 5 US gallon bottle holds 18.9 litres, often sold as 19 litres.
How many gallons is 100 liters?
100 litres is 26.42 US gallons or 22 UK gallons.
How many gallons is 4 liters?
4 litres is 1.06 US gallons, just over one gallon.
Is a gallon bigger than a litre?
Yes. A US gallon holds almost 3.8 litres and a UK gallon about 4.5 litres.
Which gallon should I choose?
Choose US gallons for anything from the United States, such as fuel economy, recipes and aquarium sizes. Choose imperial gallons for older British material and UK fuel economy figures.
Can I convert litres per 100 km to miles per gallon?
Yes. Divide 235.21 by the litres per 100 km to get US miles per gallon, or divide 282.48 to get UK miles per gallon. A car using seven litres per 100 km does about 33.6 US mpg or 40.4 UK mpg.
Built and reviewed by Hamza Farooq, founder and lead developer
· Last updated
· How we check our tools
· Report a problem