EV Range Calculator (Battery, Efficiency and Weather)
Enter battery size and consumption to estimate how far an EV will go.
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EV Range Calculator (Battery, Efficiency and Weather) by TheCalcTools
How the EV Range Calculator (Battery, Efficiency and Weather) works
Range = usable energy ÷ consumption. Energy available is the battery capacity times the charge between your starting level and the reserve you want to keep.
Consumption rises at high speed (air drag) and in cold weather (cabin heating and battery chemistry). The condition factors are typical planning allowances; your car’s trip computer gives your real figure.
The formula
Worked example
Using the default values shown in the calculator:
| Usable battery capacity (kWh) | 75 |
|---|---|
| Starting charge | 90 % |
| Charge to keep in reserve | 10 % |
| Consumption (kWh per 100 km) | 17 |
| Conditions | Mild weather, mixed driving |
- 75 kWh × (90% − 10%) = 60 kWh available.
- At 17 kWh/100 km: 353 km (219 miles).
Result:
| Range (km) | 353 |
|---|---|
| Range (miles) | 219 |
| Energy available (kWh) | 60.0 |
| Efficiency (km per kWh) | 5.88 |
| Miles per kWh | 3.66 |
Frequently asked questions
Why is my winter range lower?
Heating the cabin and battery uses energy, and cold batteries deliver less. A heat pump reduces the loss.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.