EV Charging Calculator
Estimate the cost to charge your Electric Vehicle.
EV Charging Calculator
Estimate the cost and time to charge your Electric Vehicle
How the EV Charging Calculator Works
As electric vehicles become more common, knowing exactly how much it costs to charge your car at home or at a public station is essential. Our EV Charging Calculator uses standard physics and electricity pricing to give you an accurate estimate of both the time it takes to charge and the final cost on your electricity bill.
Key Factors Explained
- Battery Capacity (kWh): The total size of your car's battery. A Tesla Model 3 Long Range is around 75 kWh to 82 kWh. A Nissan Leaf might be 40 kWh.
- Charging Power (kW): A standard home wall outlet provides about 1.4 kW. A Level 2 home charger (240V) provides between 7 kW and 11 kW. Fast public chargers can provide 50 kW to 250+ kW.
- Charging Efficiency: Charging an EV is not 100% efficient; some energy is lost as heat. Usually, Level 2 charging is around 90% efficient, meaning you pull 10% more power from the grid than what actually enters the battery.
Frequently Asked Questions
EV batteries charge non-linearly. To protect the battery cells from degrading or overheating, the car's computer significantly slows down the charging speed once the battery reaches around 80%. Our calculator provides a linear estimate, so actual times from 80% to 100% will be longer than displayed.
Look at your latest home electricity bill. Divide the total amount due by the total kWh used to find your average rate per kWh. In the US, the average is around $0.15 to $0.20 per kWh, but it varies wildly by state and time of day.