EV Energy Converter
kWh/100km, Wh/km, km/kWh — the same efficiency in different units. Convert any of them instantly and see how your EV compares.
How efficient is your EV?
| Efficiency | kWh/100km | Wh/km | km/kWh |
|---|---|---|---|
| Excellent (Model 3, IONIQ 6) | 13-15 | 130-150 | 6.7-7.7 |
| Good (most EVs) | 15-18 | 150-180 | 5.6-6.7 |
| Average SUV | 19-24 | 190-240 | 4.2-5.3 |
| Inefficient / heavy | 25+ | 250+ | 4.0 or less |
Frequently asked questions
What is the difference between kWh/100km and Wh/km?
They're the same measurement in different units. 15 kWh/100km = 150 Wh/km. Multiply kWh/100km by 10 to get Wh/km.
How do I convert kWh/100km to km/kWh?
Divide 100 by the kWh/100km value. Example: 20 kWh/100km → 100 ÷ 20 = 5 km/kWh. Higher km/kWh means more efficient.
What is a good kWh/100km for an EV?
Under 15 kWh/100km is excellent (Tesla Model 3, IONIQ 6). 15-18 is typical for cars, 19-24 for SUVs. Anything over 25 is inefficient.
How do I measure my real consumption?
Divide the energy used to recharge by the distance driven. Charging losses mean your consumption is 10-15% higher than the car's dashboard display.