EV charging cost calculator
See what charging at home costs per month and per mile, and how that compares with a gas car. Defaults are typical; change them to match your car and electric bill.
Based on U.S. DOE Alternative Fuels Data Center · U.S. EIA
How the math works
Energy used = miles ÷ efficiency, then increased by charging losses (energy lost as heat between the wall and the battery, often around 10–15% for Level 2). Cost = energy × your electricity rate. The gas comparison uses miles ÷ MPG × gas price.
Check your utility for time-of-use rates: charging overnight can cost much less than the average rate.
Frequently asked questions
What efficiency should I use?
Many EVs average about 3–4 miles per kWh. Check your car’s trip computer for your real number.
What is a typical electricity rate?
It varies widely by state; look at your bill’s per-kWh price including delivery charges.
Does Level 1 or Level 2 change the cost?
Slightly. Level 2 is usually a bit more efficient, but the rate you pay matters far more.
What sources did we use?
- U.S. DOE Alternative Fuels Data Center: charging at home (accessed October 23, 2026)
- U.S. EIA: electricity monthly update (accessed October 23, 2026)