Miles per Gallon (Imperial) to Liters per 100 km Converter
A value of 1 Miles per Gallon (Imperial) converts to 282.480936 Liters per 100 km; the two units measure the same quantity on different scales, so the relationship is not a fixed factor. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
L100km = convert(mpg-imp → L100km → L100km)
Convert Miles per Gallon (Imperial) to the base unit (L100km), then convert to Liters per 100 km.
Example Conversions
0 Miles per Gallon (Imperial) (mpg-imp)
Invalid Liters per 100 km (L100km)
1 Miles per Gallon (Imperial) (mpg-imp)
282.480936 Liters per 100 km (L100km)
25 Miles per Gallon (Imperial) (mpg-imp)
11.29923744 Liters per 100 km (L100km)
100 Miles per Gallon (Imperial) (mpg-imp)
2.82480936 Liters per 100 km (L100km)
212 Miles per Gallon (Imperial) (mpg-imp)
1.332457245 Liters per 100 km (L100km)
Conversion Table
| Miles per Gallon (Imperial) (mpg-imp) | Liters per 100 km (L100km) |
|---|---|
| 0 | Invalid |
| 1 | 282.480936 |
| 10 | 28.2480936 |
| 20 | 14.1240468 |
| 25 | 11.29923744 |
| 32 | 8.82752925 |
| 37 | 7.634619892 |
| 50 | 5.64961872 |
| 75 | 3.76641248 |
| 100 | 2.82480936 |
| 212 | 1.332457245 |
| 273.15 | 1.034160483 |
How to Convert Manually
Use these steps to convert Miles per Gallon (Imperial) values to Liters per 100 km without the calculator.
- Write down the value in Miles per Gallon (Imperial) (mpg-imp) that you want to convert.
- Apply the formula: L100km = convert(mpg-imp → L100km → L100km).
- For example, converting 10 Miles per Gallon (Imperial) gives 28.2480936 Liters per 100 km.
- Label the result as Liters per 100 km (L100km).
About Miles per Gallon (Imperial) and Liters per 100 km
Miles per imperial gallon uses the larger UK gallon (4.54609 L), so the same car scores about 20% higher than in US mpg. UK car reviews and older Commonwealth figures use it. Liters per 100 kilometers measures fuel consumption — lower is better. It is the official fuel economy figure in Europe, Australia, and most metric countries, and inverts the efficiency units used elsewhere. The two units are related by a formula rather than a fixed factor; a value of 1 Miles per Gallon (Imperial) corresponds to 282.480936 Liters per 100 km. Miles per Gallon (Imperial) to Liters per 100 km conversion comes up most often in UK car reviews and adverts and in comparing UK and US economy figures, typically when figures need restating for European and Australian car specifications.
Precision and Rounding: Fuel economy units are reciprocal of each other — consumption (L/100 km) falls as efficiency (mpg, km/L) rises — so conversions are formula-based, not simple factors, and small mpg differences matter more at low values than high ones. One decimal place is standard for window stickers and trip computers.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Miles per Gallon (Imperial) equals 18.8320624 Liters per 100 km.
15 mpg-imp -> 18.8320624 L100km
FAQ
How do I convert Miles per Gallon (Imperial) to Liters per 100 km?
Convert Miles per Gallon (Imperial) to the base unit (L100km), then convert to Liters per 100 km.
What is the formula for Miles per Gallon (Imperial) to Liters per 100 km?
The formula is L100km = convert(mpg-imp → L100km → L100km).
How many Liters per 100 km are in 1 Miles per Gallon (Imperial)?
1 Miles per Gallon (Imperial) equals 282.480936 Liters per 100 km.
Can I convert Liters per 100 km back to Miles per Gallon (Imperial)?
Yes. 1 Liters per 100 km equals 282.480936 Miles per Gallon (Imperial), and the related converter can reverse the calculation.
What are common names for Miles per Gallon (Imperial) and Liters per 100 km?
Miles per Gallon (Imperial) is shown as mpg-imp and may also be searched as mpg imp, imperial mpg, UK mpg. Liters per 100 km is shown as L100km and may also be searched as L/100km, l/100km, liters per 100km.
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