How to convert miles per imperial gallon to liters per 100 km
To convert miles per imperial gallon (mpg (UK)) to liters per 100 km (L/100 km), divide 282.481 by the mpg figure.
L/100 km = 282.481 ÷ mpg (UK)
Example: 30 mpg (UK) = 9.416031211 L/100 km.
Miles per Imperial Gallon to Liters per 100 Km conversion table
| Miles per Imperial Gallon | Liters per 100 Km |
|---|---|
| 3 mpg (UK) | 94.160312 L/100 km |
| 4 mpg (UK) | 70.620234 L/100 km |
| 5 mpg (UK) | 56.496187 L/100 km |
| 6 mpg (UK) | 47.080156 L/100 km |
| 7 mpg (UK) | 40.354419 L/100 km |
| 8 mpg (UK) | 35.310117 L/100 km |
| 10 mpg (UK) | 28.248094 L/100 km |
| 12 mpg (UK) | 23.540078 L/100 km |
| 15 mpg (UK) | 18.832062 L/100 km |
| 20 mpg (UK) | 14.124047 L/100 km |
| 25 mpg (UK) | 11.299237 L/100 km |
| 30 mpg (UK) | 9.4160312 L/100 km |
| 35 mpg (UK) | 8.0708839 L/100 km |
| 40 mpg (UK) | 7.0620234 L/100 km |
| 50 mpg (UK) | 5.6496187 L/100 km |
| 60 mpg (UK) | 4.7080156 L/100 km |
Converting liters per 100 km back to miles per imperial gallon
Use the reverse formula. See the Liters per 100 Km to Miles per Imperial Gallon converter, or press the swap button above.
About the units
Mile per imperial gallon (mpg (UK))
Miles per imperial gallon, used in the UK. About 20% higher than the US figure for the same car.
Liter per 100 km (L/100 km)
Liters of fuel used to drive 100 kilometers. Lower is better.
Fuel economy is either distance per volume (mpg, km/L), where higher is better, or volume per distance (L/100 km), where lower is better. Converting between the two families is an inversion, not a multiplication. US and UK mpg differ because their gallons differ.
Questions and answers
How do I convert miles per imperial gallon to liters per 100 km?
To convert miles per imperial gallon to liters per 100 km, divide 282.481 by the mpg figure. The formula is L/100 km = 282.481 ÷ mpg (UK). For example, 30 mpg (UK) = 9.4160312 L/100 km.
What is 30 mpg (UK) in L/100 km?
30 miles per imperial gallon is 9.416031211 liters per 100 km.
Why does L/100 km go down when mpg goes up?
mpg measures distance per fuel (higher is better) while L/100 km measures fuel per distance (lower is better). One is the reciprocal of the other, so the conversion divides rather than multiplies.
Does this mpg (UK) to L/100 km converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.