About this site
Updated September 2026
What this site is
ChargingCostCalculator.com answers one question with as much precision as public data allows: what does it actually cost to charge an electric car? We maintain cost pages for 78 EV models sold in the United States, all 51 states and D.C., and a library of plain-English guides on home charging, public charging, and the gas-versus-electric math.
The site is independent. We are not affiliated with any automaker, charging network, or electric utility, and no manufacturer pays for placement. The site is supported by advertising.
Where the numbers come from
- Electricity rates: state average residential rates based on U.S. Energy Information Administration (EIA) data, reviewed and refreshed periodically. Your own rate depends on your utility and plan — every page says so, and the calculator lets you enter your exact rate.
- Vehicle specs: usable battery capacity, EPA-estimated range, efficiency, onboard AC charger limits and DC fast-charging peaks are compiled from manufacturer specifications and EPA figures for current model years.
- Public charging prices: we model DC fast charging at 43¢/kWh, a typical mid-range price across major networks; real prices vary by network, membership and time of day.
- Gas baseline: comparisons use a 32-mpg gas car at $3.15/gallon, stated on every page where it appears.
How every figure is calculated
The formulas are deliberately simple and identical across the whole site:
Full home charge = usable battery (kWh) × rate (¢/kWh) ÷ 0.9 — the 0.9 accounts for ~10% AC charging losses between the wall and the battery.
Cost per mile = rate ÷ (efficiency in mi/kWh × 0.9).
Charging time = usable battery ÷ charger power, with DC estimates based on each car's typical 10–80% session rather than the marketing peak.
Every number on the site is an estimate, and we say so wherever one appears. Rates change, EPA figures assume ideal conditions, winter increases consumption, and public charging prices vary widely. Where reality has a known bias — charging losses, DC taper, cold weather — we bake it in or flag it rather than quoting best-case numbers.
Corrections
If you spot a spec or rate that has drifted from the current published figure, we want to know. The fastest route is the contact details on our privacy page; corrections ship in the next site update, and the "Updated" date at the top of every page reflects the last review pass.