Electric Vehicle Economy Calculator
Convert EV efficiency across mi/kWh, km/kWh, Wh/mi, Wh/km, kWh/100 miles, kWh/100 km, and MPGe in one click. Enter any value and see all formats update instantly. Add your electricity price to get true cost per mile and per km — perfect for comparing car reviews, window‑sticker MPGe, and real‑world energy costs.
Electric Vehicle Economy Converter
Convert between mi/kWh, km/kWh, Wh/mi, Wh/km, kWh/100 mi, kWh/100 km, and MPGe. Enter any one and get them all — plus cost per mile/km from your electricity price.
mi / kWh
km / kWh
Wh / mi
Wh / km
kWh / 100 mi
kWh / 100 km
MPGe
Cost per mile
Cost per km
How the conversions work
- 1 kWh = 1000 Wh
- 1 mi = 1.609344 km
- 1 US gallon of gasoline equivalent (GGE) = 33.705 kWh → used for MPGe
- Wh/mi = 1000 ÷ (mi/kWh)
- Wh/km = 1000 ÷ (km/kWh)
- kWh/100 mi = (Wh/mi) ÷ 10
- kWh/100 km = (Wh/km) ÷ 10
- MPGe = (mi/kWh) × 33.705 = 33705 ÷ (Wh/mi)
- Cost/mi = (Wh/mi ÷ 1000) × price_per_kWh
- Cost/km = (Wh/km ÷ 1000) × price_per_kWh