Convert mi/kWh to kWh/100km instantly — enter a value in either field.
| mi/kWh (mi/kWh) | kWh/100km (kWh/100km) |
|---|---|
| 2.5 mi/kWh | 24.9 kWh/100km |
| 3 mi/kWh | 20.7 kWh/100km |
| 3.5 mi/kWh | 17.8 kWh/100km |
| 4 mi/kWh | 15.5 kWh/100km |
| 4.5 mi/kWh | 13.8 kWh/100km |
| 5 mi/kWh | 12.4 kWh/100km |
| 5.5 mi/kWh | 11.3 kWh/100km |
| 6 mi/kWh | 10.4 kWh/100km |
| 6.5 mi/kWh | 9.6 kWh/100km |
Example: 4 mi/kWh → 62.1371 ÷ 4 = 15.5 kWh/100km
US EV efficiency ratings from the EPA and manufacturers typically use miles per kWh, while WLTP-tested European and Asian EVs use kWh/100km. To convert: kWh/100km = 62.1371 ÷ mi/kWh. The constant 62.1371 is the number of miles in 100 km (100 ÷ 1.609344).
A Tesla Model 3 Long Range rated at roughly 4 mi/kWh under EPA conditions consumes about 15.5 kWh/100km. A less efficient large EV at 2.5 mi/kWh consumes 24.9 kWh/100km. Knowing how to convert between these scales is essential when comparing US and European EV range estimates.
One practical note: EPA efficiency is measured at a steady mix of city and highway driving, while WLTP uses a different driving cycle. Even with correct unit conversion, the numbers may not match precisely because the underlying test procedures differ.
kWh/100km = 62.1371 ÷ 4.5 = 13.8 kWh/100km.
4 mi/kWh (15.5 kWh/100km) is reasonably efficient. Compact EVs can reach 5+ mi/kWh (under 12.5 kWh/100km), while larger SUVs may only achieve 2.5–3 mi/kWh (21–25 kWh/100km).
EPA figures are measured on a controlled driving cycle. Real-world results vary with speed, temperature, air conditioning load, driving style, and road grade. Cold weather can reduce battery efficiency by 20–40%.