EV Charging Time Calculator
Calculate how long it takes to charge your electric vehicle.
Compare home charging, AC public charging, and DC rapid charging times.
EV charging time depends on three things: how much battery you need to fill, the charger’s power output, and the car’s onboard charger capacity.
Formula: Charging time (hours) = energy needed (kWh) / min(charger power, car onboard charger limit)
Charger types and typical speeds:
| Type | Power | Example | Notes |
|---|---|---|---|
| 3-pin household socket | 2.3 kW | Any wall socket | Slowest — for emergencies only |
| 7 kW home wallbox | 7 kW | Zappi, Ohme, Easee | Overnight at home |
| 22 kW AC public | 22 kW | Destination charging | Limited by car AC charger |
| 50 kW DC rapid | 50 kW | Pod Point, BP Pulse | 0→80% in ~60 min (mid-size EV) |
| 150 kW DC rapid | 150 kW | Ionity, Tesla V3 | 0→80% in ~25 min (capable cars) |
| 350 kW DC ultra-rapid | 350 kW | Shell Recharge | Few cars can accept this rate |
The 80% rule: DC rapid chargers slow down above ~80% state of charge to protect the battery. In practice, plan to charge from 20% to 80% (60% usable range) rather than 0–100%.
Car onboard charger limits: Most mass-market EVs accept 7 or 11 kW AC maximum. Plugging into a 22 kW charger with a 7 kW onboard charger still charges at 7 kW. For DC charging, the car’s maximum DC acceptance rate applies.
Worked example:
- 75 kWh battery, at 20% (15 kWh remaining, need 45 kWh to reach 80%)
- 7 kW home wallbox: 45 / 7 = 6.4 hours
- 50 kW DC rapid: 45 / 50 = 0.9 hours (54 minutes)