MPG (UK) to L/100 km Converter
45 mpg (UK) = 6.2774 L/100 km.
Enter a value
Result
1 mile per gallon =
282.481 L/100km
1 mpg (UK) = 282.481 L/100km
L/100 km = 235.215 ÷ mpg (US) · L/100 km = 282.481 ÷ mpg (UK)
The working
- Convert 1 mpg (UK) to the base unit (L/100 km): 282.481.
- Convert that to L/100km: 282.481.
1 mpg (UK) in every unit
Typical fuel economy
- Small car
- 6.7 L/100km (35 mpg US)
- Family saloon
- 8.4 L/100km (28 mpg US)
- Large SUV
- 11.8 L/100km (20 mpg US)
- Hybrid
- 4.5 L/100km (52 mpg US)
Conversion table
Miles per UK gallon to Litres per 100 km
| Miles per UK gallon | Litres per 100 km |
|---|---|
| 20 | 14.124 |
| 30 | 9.416 |
| 35 | 8.0709 |
| 40 | 7.062 |
| 45 | 6.2774 |
| 50 | 5.6496 |
| 55 | 5.136 |
| 60 | 4.708 |
| 70 | 4.0354 |
Litres per 100 km to Miles per UK gallon
| Litres per 100 km | Miles per UK gallon |
|---|---|
| 20 | 14.124 |
| 30 | 9.416 |
| 35 | 8.0709 |
| 40 | 7.062 |
| 45 | 6.2774 |
| 50 | 5.6496 |
| 55 | 5.136 |
| 60 | 4.708 |
| 70 | 4.0354 |
Formula and worked example
L/100 km = 282.481 ÷ mpg (UK)
Convert 45 mpg (UK): using L/100 km = 282.481 ÷ mpg (UK), the result is 6.277 L/100 km.
When you need this
UK car adverts quote miles per imperial gallon, which gives a higher number than US mpg for the same car. This converts UK mpg to litres per 100 km.
Questions people ask
What is 45 mpg (UK) in L/100 km?
45 mpg (UK) is 6.27735 L/100 km.
What is the formula for miles per UK gallon to litres per 100 km?
L/100 km = 282.481 ÷ mpg (UK).
Why can't I just multiply by one number?
One unit measures distance per fuel and the other fuel per distance, so they are reciprocals: doubling one halves the other.
How do I convert litres per 100 km back to miles per UK gallon?
Use the reverse conversion: 6.27735 L/100 km is 45 mpg (UK).
Related conversions
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
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