EV charging cost calculator

Estimate what it costs to charge an electric vehicle at home – per month and per mile – at your state's rate, and compare with a gas car.

State rates are 12-month residential averages from EIA, through August 2026. Use the rate on your own bill for the most accurate result.

How to use the ev charging cost calculator

Enter the miles you drive per month.
Enter your EV's efficiency in kWh per 100 miles (from fueleconomy.gov or the car's trip computer).
Choose your state or type your rate.
Optionally add a gas car's mpg and gas price to compare.

Formula

kWh = miles × kWh per 100 miles ÷ 100; cost = kWh × rate. The default 30 kWh/100 mi is only an example. Charging losses and public charging prices are not included.

Worked examples

Example: 30 kWh per 100 miles at the US 12-month average rate
Miles per month	Energy	Cost at US avg	Cost per mile
500 miles	150 kWh	$27.24	$0.054
1,000 miles	300 kWh	$54.48	$0.054
1,500 miles	450 kWh	$81.72	$0.054
2,000 miles	600 kWh	$108.96	$0.054

Rates by state

Frequently asked questions

How much does it cost to charge an EV at home?

Multiply the kWh your car uses by your electricity rate. The calculator does this from your monthly miles and your car's efficiency.

How do I find my EV's kWh per 100 miles?

Look it up on fueleconomy.gov or check the efficiency shown by your car's trip computer.

Is home charging cheaper than public fast charging?

Usually, because public fast chargers add a margin over the electricity cost. Compare your home rate with the per-kWh price at the charger.

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