EV Range Calculator
Estimate the real-world driving range of an EV from its battery size, efficiency and the weather.
kWh
mi / kWh
%
Real-world range vs EPA range
EPA range figures are measured under controlled lab conditions. Real driving range is almost always different — usually a little lower in mixed driving, noticeably lower in cold weather, and sometimes higher on slow city routes with lots of regenerative braking.
Range = Battery kWh × State of charge × Efficiency × Conditions
What changes your efficiency
- Temperature: the biggest factor. Cold below freezing routinely cuts range 25–40%. Cabin heating draws steady power on top of that.
- Speed: aerodynamic drag rises with the square of speed. Highway at 75 mph uses a lot more energy than 55 mph.
- Terrain: hills hurt going up, help going down — regen recovers some of the climb.
- Climate control: heated seats and steering wheel use a fraction of cabin heat — use them first in winter.
Typical efficiency: small EVs and hybrids 4.0–5.0 mi/kWh, mid-size cars and SUVs 3.0–4.0, large trucks and high-performance EVs 2.0–2.8. Preconditioning the battery while still plugged in helps a lot in winter.