Mi/L to MPG (UK)
1 mile per liter equals 4.54609 miles per gallon (imperial) exactly.
How to convert miles per liter to miles per gallon (imperial)
To convert miles per liter to miles per gallon (imperial), multiply the number of miles per liter by 4.54609. This factor is exact. To go the other way, multiply miles per gallon (imperial) by 0.2199692483 (rounded).
miles per gallon (imperial) = miles per liter × 4.54609
Example: 10 miles per liter = 45.4609 miles per gallon (imperial).
Miles per gallon rises as a car gets more efficient, while liters per 100 km falls. The conversion between them is a reciprocal (for US mpg: L/100 km = 235.215 ÷ mpg).
About these units
Mile Per Liter (mi/L)
Miles traveled on one liter of fuel.
Where cars are sold with distances in miles and fuel in liters, the natural measure of efficiency is miles per liter. It is a hybrid of the two systems, and the sources consulted do not show it as a standard labelling unit. Metric countries normally quote liters per 100 kilometers or kilometers per liter, while the United States uses miles per US gallon and the United Kingdom still quotes miles per imperial gallon.
Converting is straightforward because a mile is defined as exactly 1.609344 kilometers, so one mile per liter equals 1.609344 kilometers per liter. In the other direction, one kilometer per liter is about 0.621 miles per liter. Against gallon-based figures the multiplier is the gallon size: an imperial gallon is 4.54609 liters, so one mile per liter is about 4.546 miles per imperial gallon, and the US gallon of about 3.785 liters gives about 3.785 miles per US gallon. A car that returns 10 miles per liter would therefore cover roughly 45 miles on an imperial gallon, and in the usual metric form it would burn 100 divided by 16.09, or just over 6.2 liters per 100 kilometers.
1 mile per liter = 1.609344 kilometers per liter (exactly).
Sources: Wikipedia: Fuel economy in automobiles; NIST SP 811, Appendix B.8 conversion factors
Mile Per Gallon (imperial) (mpg (UK))
Miles traveled on one imperial gallon (4.546 L). The UK still quotes fuel economy this way, so UK mpg figures are about 20% higher than US ones for the same car.
Britain's gallon is a child of the 1824 reform. It was originally defined as the volume of 10 pounds of distilled water at 62 degrees Fahrenheit, taken as 277.274 cubic inches; an 1889 Order in Council changed the figure to 277.463 cubic inches, and in 1976 the UK adopted the metric definition of exactly 4.54609 litres, after Canada had done so. The gallon used in the United States comes from a different, older wine measure, so the two differ by about 20 percent.
One imperial gallon is about 1.2 US gallons, which means that a car rated at 40 mpg in the UK delivers only about 33 mpg on the US scale. Miles per imperial gallon is still the UK's main fuel-economy unit even though petrol is sold by the litre and selling goods by the imperial gallon is no longer legal in Britain. Some Caribbean territories, such as the Cayman Islands and Grenada, still sell petrol by the imperial gallon, while the UAE, Guyana and Myanmar switched to litres in 2010, 2013 and 2014. When a figure says only mpg, check which gallon is meant.
1 mile per gallon (imperial) = 0.3540061899 kilometers per liter (approximately).
Sources: Wikipedia: Imperial gallon; Wikipedia: Fuel economy in automobiles
Related conversions
- MPG (UK) to mi/L (reverse)
- Mi/L to km/L
- Mi/L to MPG (US)
- Mi/L to L/100 km
- Km/L to MPG (UK)
- MPG (US) to MPG (UK)
- L/100 km to MPG (UK)
- Gal/100 mi (US) to MPG (UK)
- Gal/100 mi (UK) to MPG (UK)
- L/mil to MPG (UK)
See all fuel economy units.