Electric Vehicle Range Calculator

How far an EV travels on one charge comes down to battery capacity and how efficiently the car uses that energy, and getting a realistic figure is what keeps range anxiety in check. Estimating your own range turns a vehicle's EPA headline figure into something useful for planning both the daily commute and the occasional long haul.

The estimate starts from ideal range = battery capacity in kWh × efficiency in miles per kWh (the default 3.0 mi/kWh is about 333 Wh per mile; use your trip computer's figure, because EPA ratings are measured at the wall plug with charging losses included, and the 2026 median on fueleconomy.gov is 37.1 kWh per 100 miles, about 2.7 mi/kWh). The winter setting comes from measured losses: Recurrent's 2025-26 study of more than 30,000 U.S. EVs found they keep 78% of their range at 32°F and 70% at 20°F, and fueleconomy.gov reports a drop of 41% at 20°F with the cabin heater in use. The summer figure takes off 17%, AAA's measured loss at 95°F with the air conditioning on.

Advertised ranges tend to flatter the vehicle, since they come from controlled tests run under near-ideal conditions. Hard acceleration, a loaded vehicle, and the climate system running full-time all eat into the figure you'll see on the road. Leaning on the brochure number without weighing your own driving style is how owners end up surprised at the charger.