Liters to gallons converter

• US gallons = liters ÷ 3.785411784
• UK (imperial) gallons = liters ÷ 4.54609

Both factors are exact definitions. The US gallon is 231 cubic inches; the imperial gallon was defined from the volume of 10 pounds of water and is about 20% larger.

Example: 50 L is 13.21 US gallons but only 11.00 UK gallons.

A typical car fuel tank of 50 L holds about 13.2 US gallons.

Use US gallons for anything in the United States: gas prices, milk, paint, aquariums, water heaters. Use UK gallons for older British, Irish and some Canadian contexts; UK fuel is sold in liters today, but car fuel economy is still quoted in miles per imperial gallon. If a figure doesn't say which, check where it comes from: a 20% difference matters for fuel economy and tank sizes.

To compare fuel prices, convert the price per liter to price per gallon by multiplying: €1.80 per liter is €6.81 per US gallon (1.80 × 3.785). For fuel economy, liters per 100 km and miles per gallon are inverses of each other, so they can't be converted with a single factor; 8 L/100 km is about 29.4 mpg (US) or 35.3 mpg (UK).

Gallons are only the largest US liquid measure. One liter is also:

• 1.0567 US quarts (a quart is a quarter of a gallon, 0.946 L)
• 2.1134 US pints
• 4.2268 US cups
• 33.814 US fluid ounces, or 35.195 UK fluid ounces

So a 1-liter bottle holds a little more than a US quart, and a 2-liter soda bottle is about 67.6 fl oz. Switch the To unit to quarts, or use the cooking converter for cups and spoons.

• Divide by 4 for US gallons: 50 L ÷ 4 = 12.5 (exact: 13.2).
• Divide by 4.5 for UK gallons: 50 L ÷ 4.5 = 11.1 (exact: 11.0).
• A US gallon is a bit under 4 liters; a UK gallon a bit over 4.5.

The value you type is saved in the page link; use Share to send the exact conversion.

To go the other way, use the gallons to liters converter.