Miles per imperial gallon to liters per 100 kilometers
Type a value in miles per imperial gallon to see it in liters per 100 kilometers straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the miles per imperial gallon box.
- Read the result in liters per 100 kilometers as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
L/100 km = 282.4809363 ÷ mpg (UK)
Divide 282.4809363 by the value in miles per imperial gallon, because the two units are reciprocal.
Example
To convert 25 mpg (UK) to liters per 100 kilometers: 282.4809363 ÷ 25 = 11.2992 L/100 km.
Conversion table
| Miles per imperial gallon (mpg (UK)) | Liters per 100 kilometers (L/100 km) |
|---|---|
| 1 | 282.481 |
| 2 | 141.24 |
| 3 | 94.1603 |
| 5 | 56.4962 |
| 10 | 28.2481 |
| 20 | 14.124 |
| 25 | 11.2992 |
| 50 | 5.64962 |
| 100 | 2.82481 |
| 250 | 1.12992 |
| 500 | 0.564962 |
| 1,000 | 0.282481 |
About the units
- Mile per imperial gallon
- Miles per imperial gallon of 4.54609 liters, used in the United Kingdom. It reads higher than US mpg for the same car because the gallon is larger.
- Liter per 100 kilometers
- Liters of fuel used to travel 100 kilometers, so a lower number means better economy. It equals 100 divided by km/L.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many liters per 100 kilometers are in one mile per imperial gallon?
1 mpg (UK) = 282.481 L/100 km exactly.
How do I convert miles per imperial gallon to liters per 100 kilometers?
Use L/100 km = 282.4809363 ÷ mpg (UK). For example, 25 mpg (UK) = 11.2992 L/100 km.
How many miles per imperial gallon are in one liter per 100 kilometers?
1 L/100 km = 282.481 mpg (UK).
Why is mpg to L/100 km not a simple multiplication?
The units are reciprocal: one is distance per fuel, the other fuel per distance. You divide about 235.215 by the US mpg value, so 30 mpg is about 7.84 L/100 km.
Why do US and UK mpg differ?
The imperial gallon is 4.54609 L and the US gallon is 3.785411784 L, so the same car shows about 20% more miles per gallon in UK figures.