MPG (UK) to Litres per 100 km Converter
Enter mpg (UK) to get litres per 100 km instantly. Works both ways.
How to convert UK 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. UK mpg to L/100km: divide 282.481 by the mpg.
Need it the other way? Convert litres per 100 km to mpg (UK).
Reference points
- 20 MPG (UK) = 14.12405 litres per 100 km
- 30 MPG (UK) = 9.416031 litres per 100 km
- 40 MPG (UK) = 7.062023 litres per 100 km
- 50 MPG (UK) = 5.649619 litres per 100 km
- 60 MPG (UK) = 4.708016 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 = 282.4809 ÷ UK mpg (a UK gallon is 4.54609 litres and a mile is 1.609344 km).
UK mpg to L/100km chart
| MPG (UK) | Litres per 100 km |
|---|---|
| 10 UK mpg | 28.2481 L/100km |
| 15 UK mpg | 18.8321 L/100km |
| 20 UK mpg | 14.124 L/100km |
| 25 UK mpg | 11.2992 L/100km |
| 30 UK mpg | 9.41603 L/100km |
| 35 UK mpg | 8.07088 L/100km |
| 40 UK mpg | 7.06202 L/100km |
| 45 UK mpg | 6.27735 L/100km |
| 50 UK mpg | 5.64962 L/100km |
| 55 UK mpg | 5.13602 L/100km |
| 60 UK mpg | 4.70802 L/100km |
| 65 UK mpg | 4.34586 L/100km |
| 70 UK mpg | 4.03544 L/100km |
More fuel economy conversions
Frequently asked questions
Why does a higher number mean different things in MPG (UK) 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 (UK) = 7.062023 litres per 100 km.