Electric Vehicle (EV) Range Calculator
Estimate your remaining distance based on battery capacity and efficiency.
Optimal (Flat, 20°C)
Highway Speed (High Drag)
Cold Weather (Winter)
Hilly Terrain
Estimated Driving Range:
0 Units
How to Calculate Your EV Range
Understanding the range of your electric vehicle is crucial for trip planning and overcoming "range anxiety." Unlike internal combustion engines that measure efficiency in MPG, EVs use Watt-hours per kilometer (Wh/km) or kilowatt-hours per 100 miles (kWh/100mi).
The Core Formula
The mathematical logic behind EV range calculation is straightforward:
Range = (Battery Capacity in kWh × (State of Charge / 100) × 1000) / Efficiency (Wh/km or Wh/mi)
Key Factors Affecting EV Distance
- Battery State of Health (SoH): As batteries age, their usable capacity decreases. A 75kWh battery might only hold 70kWh after five years.
- Ambient Temperature: Cold weather is the biggest range killer. Batteries are less efficient at low temperatures, and the cabin heater (PTC or Heat Pump) draws significant power.
- Aerodynamics and Speed: Air resistance increases with the square of speed. Driving at 120 km/h (75 mph) consumes significantly more energy than driving at 100 km/h (62 mph).
- Regenerative Braking: Stop-and-go city traffic can actually be more efficient for EVs than highway cruising because the motor recovers energy during deceleration.
Example Calculation
If you have a Tesla Model 3 with a 75 kWh battery, and your current charge is 90%, you have 67.5 kWh of energy available. If your average consumption is 150 Wh/km, your calculation would be:
(67.5 kWh * 1000) / 150 Wh/km = 450 km total range.
Pro Tip for Efficiency
To maximize your range, use the seat heaters instead of the cabin air heater, maintain proper tire pressure, and utilize "Chill Mode" or "Eco Mode" to limit aggressive acceleration which spikes energy draw.