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 3.5 mi/kWh is about 286 Wh per mile). The climate setting you pick, 10%, 15%, 20% or 30%, is taken off in full for the winter figure, with the heater running, and at half strength for the summer figure, with the air conditioning on. For scale, fueleconomy.gov reports that at 20°F an EV's range can drop 41% with the cabin heater in use and about 12% without it, so even the 30% setting can be optimistic in a hard freeze.

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.