Fuel Consumption Converter
Fuel consumption is expressed in two opposite ways. Distance per volume — kilometres per litre, miles per gallon — rises as a vehicle becomes more efficient. Volume per distance — litres per 100 km — falls. Because one is the reciprocal of the other, converting between them is not a simple multiplication.
1 km/L = 2.352145833 mpg (US)
How to convert km/L to mpg (US)
One km/L equals 2.352145833 mpg (US), so multiply any value in km/L by 2.352145833 to get mpg. To convert back, divide by 2.352145833 — or multiply by 0.4251437074.
mpg = km/L × 2.352145833
Example: 25 km/L × 2.352145833 = 58.80364583 mpg.
Watch out: US and UK mpg figures differ by about 20% for the same car, because the imperial gallon is larger than the US gallon.
km/L to mpg (US) table
| km/L (km/L) | mpg (US) (mpg) |
|---|---|
| 3 | 7.0564375 |
| 4 | 9.408583333 |
| 5 | 11.76072917 |
| 6 | 14.112875 |
| 7 | 16.46502083 |
| 8 | 18.81716667 |
| 9 | 21.1693125 |
| 10 | 23.52145833 |
| 12 | 28.22575 |
| 15 | 35.2821875 |
| 20 | 47.04291667 |
| 25 | 58.80364583 |
| 30 | 70.564375 |
mpg (US) to km/L table
| mpg (US) (mpg) | km/L (km/L) |
|---|---|
| 3 | 1.275431122 |
| 4 | 1.70057483 |
| 5 | 2.125718537 |
| 6 | 2.550862245 |
| 7 | 2.976005952 |
| 8 | 3.401149659 |
| 9 | 3.826293367 |
| 10 | 4.251437074 |
| 12 | 5.101724489 |
| 15 | 6.377155611 |
| 20 | 8.502874149 |
| 25 | 10.62859269 |
| 30 | 12.75431122 |
Fuel Consumption units at a glance
All 4 units this converter supports, each expressed in km/L (km/L) and the other way round.
| Unit | Symbol | 1 unit in km/L | 1 km/L in unit |
|---|---|---|---|
| km/L | km/L | 1 | 1 |
| L/100km | L/100km | 100 | 100 |
| mpg (US) | mpg | 0.4251437074 | 2.352145833 |
| mpg (UK) | mpg (UK) | 0.3540061899 | 2.824809363 |
Where fuel consumption conversions are used
Comparing vehicle efficiency across countries: most of Europe uses litres per 100 km, the United States uses miles per US gallon, and the UK uses miles per imperial gallon.
Frequently asked questions
What is 1 km/L in mpg (US)?
1 km/L (km/L) is 2.352145833 mpg (US) (mpg).
What is 1 mpg (US) in km/L?
1 mpg (US) (mpg) is 0.4251437074 km/L (km/L).
How do I convert km/L to mpg (US)?
Multiply the value in km/L by 2.352145833. For example, 5 km/L × 2.352145833 = 11.76072917 mpg. To go the other way, divide by 2.352145833.
How many units does the fuel consumption converter support?
It converts between 4 units: km/L, L/100km, mpg (US), mpg (UK).
What should I watch out for when converting fuel consumption?
US and UK mpg figures differ by about 20% for the same car, because the imperial gallon is larger than the US gallon.
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.