EV Range Calculator
Enter a battery capacity, energy consumption, and charge level to estimate driving range in kilometers and miles.
Estimated range
Why range is really just division
An EV’s range comes from one simple relationship: how much usable energy is in the battery, divided by how much energy the car uses per unit of distance. Everything else — speed, weather, terrain, HVAC load — matters only because it changes that second number, the consumption figure.
That’s why the most accurate way to use this calculator is to enter your own vehicle’s trip-computer consumption average rather than the rated window-sticker figure, especially if you do a lot of highway driving or live somewhere cold — both push real consumption well above the rated number.
Frequently Asked Questions
How is EV range actually calculated?
Range comes from dividing usable battery energy by how much energy the car consumes per distance travelled: usable energy (kWh) ÷ consumption (kWh per 100 km) × 100. A 75 kWh battery at 18 kWh/100 km gives roughly 417 km — the same arithmetic that underlies every EV trip-planning app, just without the live traffic and elevation data.
Why does my real range never match the rated figure?
Rated range (EPA or WLTP) is measured under specific test conditions. Real consumption swings with speed (aerodynamic drag rises with the square of speed), temperature (cold weather increases both rolling resistance and cabin-heating draw), elevation gain, tire pressure, and payload. Entering your own trip-computer consumption figure instead of the window-sticker number gives a far more realistic estimate.
Should I plan around 100% charge?
Most manufacturers recommend routinely charging to somewhere between 80–90% for daily driving and reserving 100% for long trips, since staying at a full charge for extended periods can accelerate battery wear on some chemistries. This calculator lets you enter any charge percentage so you can see how a more conservative daily habit affects usable range.
Does this account for regenerative braking or climate control?
Not directly — this tool uses a single consumption figure (kWh per 100 km) that you provide, and real-world consumption already has regenerative braking, HVAC use, and driving style baked into it if you take that figure from your own trip computer. It won't separately model each factor; for that level of detail, a full trip-planning app with live route and weather data is the better tool.
Educational estimate using a simplified formula. Real-world range depends on driving style, weather, terrain, and vehicle condition — always plan a margin of safety on longer trips.