Real-World EV Range Calculator
Adjust an electric car's rated range for temperature and how you drive to see the distance you can realistically expect on the road.
Estimate based on typical effects of temperature and speed. Real range also depends on terrain, payload, tyres, heating and battery age.
How it works
Why real range differs from the rating
The range on the window sticker is a single official number, measured in a lab under mild conditions at moderate speeds. It is great for comparing one car against another, but it was never meant to predict your Tuesday commute. Real driving brings cold mornings, fast motorways, hills and a boot full of luggage, and each of those pulls the figure down. This calculator takes the rated range and adjusts it for the two factors that move the needle most for everyday drivers: the temperature outside and the kind of roads you spend your time on. The result is a more honest number to plan around, and a feel for how far the rating and reality can drift apart. If long trips make you nervous, our guide to EV range anxiety is a good place to start.
Cold weather and range
Cold is the single biggest reason an EV falls short of its rating in daily use, and it works in two ways at once. A lithium battery holds and delivers less energy when it is cold, so the usable capacity shrinks before you have even moved. Then the car spends real energy keeping you and the battery warm, because unlike a petrol car there is no waste engine heat to borrow from. The cabin heater, the heated seats and the battery's own warming system all draw from the same pack that moves the car. Short winter trips are the worst case, since the heater runs flat out while everything is still cold and you never recover that energy over distance. A heat pump and preconditioning the car while it is still plugged in both soften the hit, but on a truly freezing day a loss of a fifth to a quarter of your range is normal and worth planning for.
Speed, driving style and how to get more range
Speed is the other big lever, and it is one you control. Air resistance rises steeply as you go faster, so a steady motorway cruise can burn far more energy per mile than the same distance in town, where regenerative braking quietly hands energy back every time you slow down. That is why an EV that sails past its rating around the city can fall well short on a long fast trip. To stretch your range, ease off the top speed on the motorway, look ahead and coast into stops so regen does the braking, keep your tyres properly inflated, and shed any weight or roof boxes you are not using. Warming the cabin while still on the charger helps in winter too. When you do need to top up, our charging cost calculator and charging time calculator show what a session will cost and how long it will take, and the wider EV charging guide ties it all together.
Frequently asked questions
Why does my EV lose range in winter?
Cold weather hits range in two ways. The battery itself holds and delivers less energy when it is cold, and the car spends extra energy heating the cabin and the battery. On a freezing day you can lose a fifth to a quarter of your usual range, and short trips are worst because the heater runs hard before the car warms up.
How much range do you lose driving on the motorway?
A lot more than most people expect. Air resistance climbs sharply with speed, so steady motorway driving can use around 20 to 30 percent more energy than mixed roads. That is why an EV that does well in town can fall short of its rating on a long fast trip.
Is the official EV range accurate?
The official figure is a useful comparison number, but it is measured under mild conditions at moderate speeds. In real driving, cold weather, high speed, terrain and a loaded car all pull the figure down, so plan around a real-world range that is usually lower than the sticker.
Keep reading
EV Range Anxiety: Is It Still a Problem?
How far electric cars really go, and why the fear of running flat is fading fast.Read guide
EV Charging Cost Calculator
See what charging costs per 100 miles, per month and per year, and how it compares with petrol.Open tool