km/L to L/100km Converter
Enter a value below to convert kilometers per liter to liters per 100 km. Fuel economy is reciprocal, so you divide: L/100km = 100 / km/L - for example 15 km/L is 6.67 L/100km. For the opposite direction, use our L/100km to km/L converter.
15 km/L = 6.67 L/100km. Convert kilometers per liter to liters per 100 km. Need the reverse? See L/100km to km/L.
Kilometers per liter
- Definition
- Kilometers per liter (symbol: km/L) is a measure of fuel economy: the distance in kilometers a vehicle travels on one liter of fuel. Because the fuel is fixed and the distance varies, a higher number means a more efficient car - the opposite sense to L/100km.
- History / origin
- It is a metric distance-per-fuel unit built from the kilometer and the liter, mirroring the older miles-per-gallon idea but in SI quantities. It became common where the metric system was adopted but the "distance per fuel" framing of MPG was still preferred over L/100km.
- Current use
- Kilometers per liter is widely quoted in Japan, India and parts of Southeast Asia and Latin America, appearing on manufacturer specifications, fuel-economy labels and trip computers in those markets.
Liters per 100 kilometers
- Definition
- Liters per 100 km (symbol: L/100km) is a measure of fuel consumption: the volume of fuel, in liters, a vehicle burns to travel 100 kilometers. Because the distance is fixed and the fuel varies, a lower number means a more efficient car - the reciprocal of kilometers per liter.
- History / origin
- It is the metric standard for fuel consumption, defined directly from the liter and the kilometer. As Europe and most of the world moved to SI units, L/100km replaced distance-per-fuel figures on car specifications and dashboards.
- Current use
- L/100km is the official fuel-economy unit across Europe, Australia, New Zealand, South Africa and much of Asia, quoted on manufacturer brochures, window stickers and trip computers.
Kilometers per liter to L/100km conversion table
| Kilometers per liter [km/L] | Liters per 100 km [L/100km] |
|---|---|
| 5 km/L | 20 L/100km |
| 8 km/L | 12.5 L/100km |
| 10 km/L | 10 L/100km |
| 12 km/L | 8.3333333333 L/100km |
| 15 km/L | 6.6666666667 L/100km |
| 18 km/L | 5.5555555556 L/100km |
| 20 km/L | 5 L/100km |
| 22 km/L | 4.5454545455 L/100km |
| 25 km/L | 4 L/100km |
| 30 km/L | 3.3333333333 L/100km |
Popular kilometers per liter to L/100km conversions
Everyday fuel-economy figures, rounded to two decimals - the kind of numbers you meet on real car specifications.
| Kilometers per liter [km/L] | Liters per 100 km [L/100km] |
|---|---|
| 8 km/L | 12.50 L/100km |
| 10 km/L | 10 L/100km |
| 12 km/L | 8.33 L/100km |
| 15 km/L | 6.67 L/100km |
| 18 km/L | 5.56 L/100km |
| 20 km/L | 5 L/100km |
| 22 km/L | 4.55 L/100km |
| 25 km/L | 4 L/100km |
| 28 km/L | 3.57 L/100km |
| 30 km/L | 3.33 L/100km |
How to convert km/L to L/100km
To convert km/L to L/100km, divide 100 by the km/L value. Fuel economy is a reciprocal measure - a car that travels more kilometers per liter burns fewer liters per 100 km - so you divide instead of multiplying. For example, 15 km/L = 100 / 15 = 6.67 L/100km.
The constant is simply 100, the number of kilometers in the L/100km reference distance. The same constant works in both directions:
L/100km = 100 / km/L
km/L = 100 / L/100km
Example. A car rated at 20 km/L does 100 / 20 = 5 L/100km, while a thirstier 10 km/L does 100 / 10 = 10 L/100km.
When you need to convert km/L to L/100km
Drivers and buyers move between kilometers per liter and liters per 100 km whenever specifications from different markets meet. Common cases:
- Reading a Japanese or Indian car's km/L fuel-economy rating as a European-style L/100km number.
- Comparing an imported model's km/L spec against local L/100km ratings.
- Working out the L/100km of a rental car abroad whose trip computer shows km/L.
- Translating a manufacturer's km/L claim into L/100km to compare two cars fairly.
- Budgeting fuel for a road trip when the brochure quotes kilometers per liter.
Frequently asked questions
How do I convert kilometers per liter to liters per 100 km?
Divide 100 by the km/L figure. For example, 15 km/L equals 100 / 15 = 6.67 L/100km. The two units are reciprocal, so a higher km/L means a lower L/100km.
What is 15 km/L in L/100km?
15 km/L is about 6.67 L/100km, found by dividing 100 by 15. A more efficient 20 km/L works out to 5 L/100km.
What is the km/L to L/100km formula?
The formula is L/100km = 100 / km/L. Because the two units are reciprocal measures of the same fuel use, you divide rather than multiply, and the same constant of 100 converts back the other way.
What is a good km/L figure in L/100km?
Around 17 to 20 km/L, or about 5 to 6 L/100km, is efficient for a modern petrol car. 15 km/L is roughly 6.67 L/100km, while under 10 km/L, over 10 L/100km, is thirsty.
How do I convert L/100km back to km/L?
Divide 100 by the L/100km value, or use our L/100km to km/L converter. For example, 8 L/100km is 100 / 8 = 12.50 km/L.
Does this use the US or UK gallon?
Neither. Both kilometers per liter and liters per 100 km are metric units based on the liter, so no gallon is involved. Gallons only appear when you convert to MPG, where the US gallon is 3.785 liters and the UK gallon is 4.546 liters.
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