MPG (US) to L/mil
1 mile per gallon (US) equals 23.52145833 liters per mil.
How to convert miles per gallon (US) to liters per mil
Converting miles per gallon (US) to liters per mil is not a simple multiplication, so use the formula below.
liters per mil = 23.52145833 ÷ miles per gallon (US)
Example: 10 miles per gallon (US) = 2.352145833 liters per mil.
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 Gallon (US) (mpg (US))
Miles traveled on one US gallon of fuel. The standard fuel-economy unit in the United States; higher is better.
American fuel economy became a matter of policy in the 1970s. After the 1973 Arab oil embargo, Congress enacted the Corporate Average Fuel Economy rules in 1975, setting a sales-weighted average for each manufacturer's cars and light trucks. Fleet economy had been sliding until 1973, reaching a low of about 13.4 mpg, then rose as fuel costs rose: about 17 mpg in 1978, 22 in 1982, and about 25.4 mpg for the average new vehicle in the 2020 model year. Earlier still, the Mobil Economy Run (1936 to 1968) tested real-world mileage on a coast-to-coast route.
The US gallon is legally 231 cubic inches, or 3.785411784 litres. It descends from the English wine gallon, redefined as 231 cubic inches in 1706 under Queen Anne and adopted as the US standard in 1836. It is about 17 percent smaller than the imperial gallon, so US mpg figures look lower than British ones for the same car. Mpg has a quirk known as the MPG illusion: going from 10 to 20 mpg halves fuel use, but going from 50 to 60 mpg saves far less, even though both are 10 mpg gains. For that reason the EPA label also shows gallons per 100 miles.
1 mile per gallon (US) = 0.4251437074 kilometers per liter (approximately).
Sources: Wikipedia: Fuel economy in automobiles; Wikipedia: Imperial gallon; fueleconomy.gov: Learn more about the gasoline label
Liter Per Mil (L/mil)
Liters used per 10 km (one Scandinavian 'mil'). Swedish and Norwegian drivers quote fuel use in liters per mil.
Fuel economy in Sweden and Norway is traditionally given as the number of liters burned per mil, the Scandinavian unit of 10 kilometers. That makes it a cousin of the European liters per 100 kilometers figure, just one tenth as large: 0.6 liters per mil is the same as 6 liters per 100 kilometers.
Like consumption figures elsewhere, it counts fuel per distance, so a lower number means a thriftier car. This is the reverse of kilometers per liter or miles per gallon, which count distance per fuel, so a conversion has to invert the value rather than scale it.
The unit survives because the mil itself survives in everyday Scandinavian speech, even though kilometers appear on road signs. Writers there still use it in casual talk about cars, alongside odometer readings quoted in mil.
1 liter per mil = 10 kilometers per liter (exactly).
Sources: Wikipedia: Scandinavian mile
Related conversions
- L/mil to MPG (US) (reverse)
- MPG (US) to km/L
- MPG (US) to MPG (UK)
- MPG (US) to L/100 km
- MPG (US) to mi/L
- MPG (US) to gal/100 mi (US)
- MPG (US) to gal/100 mi (UK)
- Km/L to L/mil
- MPG (UK) to L/mil
- L/100 km to L/mil
See all fuel economy units.