EV Range Calculator
Estimate electric vehicle driving range from battery capacity, efficiency, state of charge, weather, and driving conditions.
Built for Renewable Energy1 documented formula3 recommended next stepsPrivate in your browser
Use this result well
A quick decision brief for this specific tool
Inputs that matter
Battery Capacity, Usable Battery %, Efficiency, State of Charge, and 2 more
Output to expect
EV Range Calculator
How it works
1 documented formula across 1 calculation mode
- Keep 4 bounded inputs within the limits shown beside the fields.
- Confirm that every value uses the unit and time basis shown before comparing scenarios.
- Change one input at a time to see which assumption materially changes the result.
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Reference & details
How it works
Updated July 2026
How it works
Updated July 2026Base Range Formula
Range equals usable energy multiplied by vehicle efficiency (miles per kWh).
Range (mi) = Usable kWh × mi/kWhUsable Battery Capacity
Manufacturers reserve 5–10% of gross battery capacity as a buffer. State of charge further limits available energy.
Usable kWh = Capacity × Usable% × SOC%Weather and Driving Adjustments
Cold weather (battery heating, cabin heat) can reduce range 20–30%. Highway speeds above 70 mph and A/C use also lower efficiency.
Adjusted Range = Base Range × Weather Factor × Driving FactorUpdated: July 2026
Example Scenarios
Typical modern EV with 90% usable capacity and 3.5 mi/kWh efficiency.
Battery: 75 kWhEfficiency: 3.5 mi/kWhWeather: Mild
→ ~236 miles estimated range
Same vehicle in sub-freezing conditions with heat on.
Weather: Cold (<32°F)
→ Range reduced ~25–30% vs mild conditions
Fast-charging to 80% SOC then highway driving.
SOC: 80%Driving: Highway
→ Lower range than EPA rating due to speed and partial charge
Common Mistakes to Avoid
Common Mistakes to Avoid
Using gross battery capacity instead of usable energy
EPA range ratings account for usable capacity. A "75 kWh" pack may only have ~67–72 kWh usable.
Expecting EPA range in winter or at 75 mph
EPA tests combine city/highway cycles at moderate temperatures. Real-world highway winter range is often 20–40% lower.
FAQ
Range = usable battery energy (kWh) × efficiency (mi/kWh), adjusted for weather and driving conditions.
Battery chemistry is less efficient in cold, and energy is used to heat the cabin and battery pack.
Most EVs achieve 2.5–4.5 mi/kWh (22–40 kWh/100mi). Smaller, lighter cars tend toward the higher end.
Aerodynamic drag increases with speed. Sustained 70+ mph driving typically reduces range 10–20% vs mixed driving.
Daily charging to 80–90% preserves battery health. Use 100% only when you need maximum range for a long trip.
About EV Range Calculator
Calculate how far your electric vehicle can travel on a charge. Enter battery size, efficiency, state of charge, and weather to estimate real-world range beyond the EPA sticker rating.