EV Charging Cost & EV vs Gas Calculator
Calculate the cost to charge an electric car at home or a public charger, the cost per mile, and yearly savings compared with a gas car.
How to use
- 1Enter the battery size, charging level and electricity price.
- 2Enter your yearly mileage and a comparable gas car's MPG and fuel price to see the savings.
How it's calculated
Charge cost = battery kWh × (charge %) ÷ charging efficiency × price per kWh. EV cost per mile = kWh per mile ÷ efficiency × price. Savings = gas cost − EV cost over your yearly miles.
Frequently asked questions
How efficient is charging?
Roughly 85–90% at home on Level 2 (some energy is lost as heat), and a little less on a standard household outlet.
How much do public fast chargers cost?
Often 2–4 times home electricity rates — around $0.40–0.60 per kWh in the US, varying by network and membership.
What efficiency do EVs get?
Most EVs use 0.25–0.35 kWh per mile (15–22 kWh per 100 km); large trucks and SUVs use more.