EV Charging Time Calculator
See how long a charge will take, at home or on a public charger, for any battery and charger.
kWh
kW
%
%
The three charging speeds
- Level 1 (~1.4 kW): a regular 120 V wall outlet. Adds 3–5 miles of range per hour — useful as a top-up only.
- Level 2 (3.3–19 kW): a 240 V circuit at home or work. Most home installs use 7.4–11 kW. A full charge typically takes 4–10 hours.
- DC fast charging (50–350 kW): public-only, direct DC into the battery. 80% in 20–40 minutes is normal for a modern EV.
The formula
Time = (Battery kWh × % added) ÷ Charger kW
Worked example
A 75 kWh battery charging from 20% to 80% needs 45 kWh. At 7.4 kW (a typical home Level 2 charger): 45 ÷ 7.4 = about 6 hr 5 min.
This is a linear estimate. In real life DC fast charging slows significantly above about 80% — the last 20% can take as long as the first 60%. For everyday DC fast charging, plan to unplug around 80%.