mpg to L/100 km
Convert US miles per gallon into litres per 100 km. The two run in opposite directions, so equal steps in mpg are not equal steps in fuel: 20→25 mpg saves 2.35 L/100 km, while 40→45 mpg saves only 0.65.
Common values
Formula
L/100km = 235.2145833333333 ÷ mpg
The constant 235.215 is the US gallon, 3.785411784 L, times 100 and divided by the 1.609344 km in a mile. Imperial-gallon mpg needs 282.481 instead, so British magazine figures come out about 20% too low here.
Frequently asked questions
Q. How many L/100km is 1 mpg?
1 mpg is 235.21 L/100km, and 10 mpg is 23.52 L/100km. Type any value in the box above to convert instantly.
Q. And how many mpg is 1 L/100km?
1 L/100km is 235.21 mpg. This converter works both ways, so typing in the right box updates the left one.
Q. Where is this unit used?
The constant 235.215 is the US gallon, 3.785411784 L, times 100 and divided by the 1.609344 km in a mile. Imperial-gallon mpg needs 282.481 instead, so British magazine figures come out about 20% too low here.
Other converters
Traditional units (geun, doe, majigi and so on) vary by region and product.