How to convert MPG (UK) to km per liter
MPG (UK) and Kilometers per Liter are related by a formula rather than a single factor. Fuel economy conversions let you compare cars rated in different countries. Note that L/100 km is an inverse measure — lower is better.
MPG (UK) to Kilometers per Liter conversion table
| MPG (UK) (mpg (UK)) | Kilometers per Liter (km/L) |
|---|---|
| 3 mpg (UK) | 1.0620185698 km/L |
| 5 mpg (UK) | 1.77003094967 km/L |
| 8 mpg (UK) | 2.83204951948 km/L |
| 10 mpg (UK) | 3.54006189935 km/L |
| 15 mpg (UK) | 5.31009284902 km/L |
| 20 mpg (UK) | 7.08012379869 km/L |
| 25 mpg (UK) | 8.85015474837 km/L |
| 30 mpg (UK) | 10.620185698 km/L |
| 40 mpg (UK) | 14.1602475974 km/L |
| 50 mpg (UK) | 17.7003094967 km/L |
About the units
MPG (UK) (mpg (UK))
Imperial miles per gallon uses the larger 4.546 L UK gallon, so UK mpg figures are higher.
Kilometers per Liter (km/L)
Kilometers per liter is how far a vehicle travels on one liter of fuel.
How to use this converter
- Type the number of MPG (UK) (mpg (UK)) in the input box.
- The result in km per liter appears instantly — no button needed.
- See the same value in every other fuel economy unit just below.
- Use “Swap units” to convert km per liter back to MPG (UK).
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many km per liter are in one mpg (uk)?
0.354006189935 km/L corresponds to 1 mpg (UK). Because this scale uses an offset or an inverse relationship, there is no single multiplication factor — use the formula above.
How do I convert MPG (UK) to km per liter?
Apply the formula shown on this page, or enter your value in the converter for an instant exact answer.
What is 25 mpg (UK) in km/L?
25 mpg (UK) = 8.85015474837 km/L. Also, 10 mpg (UK) = 3.54006189935 km/L and 40 mpg (UK) = 14.1602475974 km/L.
What is the difference between a mpg (uk) and a kilometers per liter?
Imperial miles per gallon uses the larger 4.546 L UK gallon, so UK mpg figures are higher. Kilometers per liter is how far a vehicle travels on one liter of fuel.
Is this tool free and private?
Yes — the MPG (UK) to Kilometers per Liter is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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