Miles per UK gallon (mpg (imp)) to Kilometers per liter (km/L) Conversion
Miles per UK gallon
Miles per UK gallon (mpg imp) measures fuel economy using the imperial gallon (4.54609 L), which is approximately 20% larger than the US gallon. As a result, the same vehicle achieves a higher mpg figure by the UK standard than by the US standard — a 40 mpg UK figure equals approximately 33.3 mpg US for the same vehicle. The UK mpg is still used in British automotive journalism and official government fuel economy testing, though EU-harmonised L/100km data is increasingly common since Brexit.
Kilometers per liter
Kilometres per litre (km/L) is the metric efficiency-based fuel economy measure used primarily in Japan, India, Latin America, and parts of Asia. Like mpg, higher values indicate greater efficiency — it is the metric analogue of miles per gallon. One km/L equals approximately 2.825 mpg (US) and is inversely related to L/100km: km/L = 100 ÷ L/100km. A Japanese kei car rated at 20 km/L achieves approximately 47 US mpg or 5 L/100km. The km/L unit is used in Japanese JC08 and WLTC fuel economy certification cycles.
| Miles per UK gallon (mpg (imp)) | Kilometers per liter (km/L) |
|---|---|
| 0.1 mpg (imp) | 0.0354 km/L |
| 1 mpg (imp) | 0.354 km/L |
| 2 mpg (imp) | 0.708 km/L |
| 3 mpg (imp) | 1.062 km/L |
| 5 mpg (imp) | 1.77 km/L |
| 10 mpg (imp) | 3.5401 km/L |
| 20 mpg (imp) | 7.0801 km/L |
| 30 mpg (imp) | 10.6202 km/L |
| 50 mpg (imp) | 17.7003 km/L |
| 100 mpg (imp) | 35.4006 km/L |
| 1000 mpg (imp) | 354.0062 km/L |
Frequently Asked Questions (FAQ)
How many kilometers per liter are in 1 miles per UK gallon?
1 miles per UK gallon (mpg (imp)) is exactly 0.354006 kilometers per liter (km/L).
How do I convert miles per UK gallon to kilometers per liter?
Multiply the value in miles per UK gallon by 0.354006 to get the result in kilometers per liter. Or use the converter above — type any number and see the result instantly.