Your electricity rate, your miles — applied to verified battery sizes and EPA efficiency for all 91 EVs.
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Math: full charge = battery kWh × $/kWh ÷ 0.90 charging efficiency. Per-mile = (EPA kWh/100 mi ÷ 100) × $/kWh. Battery sizes are verified per model (usable where published); where only gross capacity is published we say so. Public fast charging typically costs 2–4× more per kWh than home rates.
Home charging on a standard residential rate is the cheapest way to fuel any car sold today. The national average residential rate is about $0.17/kWh, but it ranges from under $0.10 in parts of the Northwest to over $0.30 in California and New England — which is why the rate input above matters more than any other number. Our charging cost guide breaks down home vs public pricing, and the fastest-charging ranking shows which EVs add miles quickest on road trips.
Multiply the car's usable battery size (kWh) by your electricity rate ($/kWh), then add ~10% for charging losses. A 75 kWh EV at the $0.17/kWh national average costs about $14 for a full 0–100% charge.
Almost always, when you charge at home. At $0.17/kWh, a typical EV costs 4–6 cents per mile in electricity; a 30-mpg gas car at $3.20/gallon costs about 11 cents per mile in fuel.
No — this calculator uses verified battery capacities for all 91 EVs in our database, so you just pick the car.