EV Charging Time Calculator

Compare charging times across AC slow, AC standard, AC fast, and DC fast charging for any EV battery size.

⏱️ EV Charging Time Calculator

Battery Capacity (kWh)

Current Charge (%)

Target Charge (%)

Charging Times

AC Slow (2.3 kW)19h 34m

AC Standard (7.4 kW)6h 5m

AC Fast (11 kW)4h 5m

DC Fast (50 kW)54m

DC Fast (150 kW)18m

DC Ultra (350 kW)8m

💡 Understanding EV Charging Speeds

AC Slow (2.3 kW, standard household outlet): ideal for overnight top-ups. AC Standard (7.4 kW, dedicated home charger): the most common home setup. AC Fast (11–22 kW): found at workplaces and public stations. DC Fast (50–350 kW): highway and rapid charging stations.

Charging time = kWh needed ÷ charger power (kW). A 75 kWh battery from 20–80% needs 45 kWh. On AC Standard at 7.4 kW: 45 ÷ 7.4 = 6.1 hours. On DC Fast at 150 kW: 45 ÷ 150 = 18 minutes (though charging slows above 80%).

75 kWh battery, 20% → 80% (45 kWh): AC Slow (2.3 kW) = 19.6 hrs, AC Standard (7.4 kW) = 6.1 hrs, AC Fast (11 kW) = 4.1 hrs, DC 150 kW = 18 min, DC 350 kW = 8 min.