EV Charging Time Calculator
Calculate how long it takes to charge an electric vehicle from a given state of charge to a target level, for any charging level from Level 1 to DC Fast.
Results
What is it?
EV charging time depends on the battery capacity, how much charge is needed (current to target SOC), charger power level, and onboard charger efficiency. Level 1 (120V/15A) is slowest at 1.4 kW; Level 2 home chargers run at 7-11 kW; DC Fast Chargers deliver 50-350 kW directly to the battery. Most EVs limit fast charging to 80% SOC to protect battery life.
How to use
1. Enter your vehicle battery capacity in kWh. 2. Enter current state of charge (SOC) and your desired target SOC. 3. Select your charging level from the dropdown. 4. Enter charging efficiency (Level 2 typically 88-92%). 5. Read off charging time and estimated electricity cost.
Example scenario
Tesla Model 3 Long Range (82 kWh) at 20% SOC, charging to 80% on a 7.2 kW Level 2 home charger at 90% efficiency. kWh needed = 82 x (80-20)/100 = 49.2 kWh. Effective rate = 7.2 x 0.90 = 6.48 kW. Time = 49.2/6.48 = 7.6 hours. Cost = 49.2 x $0.15 = $7.38.
Pro tip
Charge to 80% for daily use to maximise battery longevity — lithium-ion degradation accelerates significantly above 80% SOC. Use a full 100% charge only before long road trips. If you have time-of-use electricity pricing, schedule overnight charging during off-peak hours (typically midnight to 6am) to cut charging costs by 30-50%.