MPG (US) to Litres per 100 km Converter
Enter mpg (US) to get litres per 100 km instantly. Works both ways.
How to convert US mpg to L/100km
Fuel economy units are not simple multiples of each other. Miles per gallon measures distance per fuel, while litres per 100 km measures fuel per distance, so one is the inverse of the other. US mpg to L/100km: divide 235.215 by the mpg.
Reference points
- 20 MPG (US) = 11.76073 litres per 100 km
- 30 MPG (US) = 7.840486 litres per 100 km
- 40 MPG (US) = 5.880365 litres per 100 km
- 50 MPG (US) = 4.704292 litres per 100 km
- 60 MPG (US) = 3.920243 litres per 100 km
Why the conversion is not a simple multiple
Miles per gallon measures distance per unit of fuel, while litres per 100 km measures fuel per unit of distance, so one is the inverse of the other. The relationship is L/100 km = 235.2146 ÷ US mpg (a US gallon is 3.785411784 litres and a mile is 1.609344 km).
US mpg to L/100km chart
| MPG (US) | Litres per 100 km |
|---|---|
| 10 US mpg | 23.5215 L/100km |
| 15 US mpg | 15.681 L/100km |
| 20 US mpg | 11.7607 L/100km |
| 25 US mpg | 9.40858 L/100km |
| 30 US mpg | 7.84049 L/100km |
| 35 US mpg | 6.72042 L/100km |
| 40 US mpg | 5.88036 L/100km |
| 45 US mpg | 5.22699 L/100km |
| 50 US mpg | 4.70429 L/100km |
| 55 US mpg | 4.27663 L/100km |
| 60 US mpg | 3.92024 L/100km |
More fuel economy conversions
Frequently asked questions
Why does a higher number mean different things in MPG (US) and litres per 100 km?
Miles per gallon rises as a car gets more efficient, while litres per 100 km falls, because one is distance per fuel and the other is fuel per distance.
What is 40 in litres per 100 km?
40 MPG (US) = 5.880365 litres per 100 km.