Electric car consumption
Unit conversionHow efficient is your electric car?
Switch an EV's kWh per 100 km to km per kWh, miles per kWh or Wh per mile.
What you enter stays on your device while you use this tool. Opening a shared link sends the settings in its address to HowToolbox to prepare the page.
Result
5 km/kWh
20 kilowatt-hours per 100 km equals 5 kilometres per kWh
- The other way round: 1 km/kWh = 100 kWh/100 km.
In all units
- kWh per 100 km
- 20 kWh/100 km
- Watt-hours per km
- 200 Wh/km
- Watt-hours per mile
- 321.8688 Wh/mi
- Kilometres per kWh
- 5 km/kWh
- Miles per kWh
- 3.107 mi/kWh
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Switch an EV's kWh per 100 km to km per kWh, miles per kWh or Wh per mile.
How to use
- Type the consumption you know, such as 8 L/100 km or 30 mpg.
- Pick the unit it is in and the unit you want. Use the switch under the result for an electric car.
How it works
Fuel economy is told in two opposite ways. Europe says how much fuel a car burns over a set distance (litres per 100 km), so a smaller number is better. The US, UK and others say how far a car goes on a set amount of fuel (miles per gallon, km per litre), so a bigger number is better. Converting between the two means taking a reciprocal, which is why 30 mpg and 60 mpg are not as far apart as they sound.
L/100 km = 100 ÷ (km per litre) = 235.215 ÷ mpg (US) = 282.481 ÷ mpg (imperial). The numbers come from a mile being 1.609344 km, a US gallon 3.785411784 L and an imperial gallon 4.54609 L. For example, 30 mpg (US) is 235.215 ÷ 30 = 7.84 L/100 km. For electric cars, kWh per 100 km works the same way, and 1 Wh/km is 0.1 kWh/100 km.
A US gallon is smaller than an imperial one, so the same car shows a higher number in imperial mpg (about 20 % more). The result is the same fuel use measured differently; real consumption also depends on driving, load and weather.
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