EV Range Calculator: Real-World Range by Temp, Speed, and Conditions
EPA range is a comparison tool, not a road-trip planner. Adjust for outside temperature, highway speed, cabin heat or AC, and payload — see what your EV will actually do on your commute or trip.
Vehicle
75 kWh pack · 326 mi EPA · 28 kWh/100 mi rated · heat pump · full specs
Driving conditions
Climate control
Payload
Battery
Real-world range, full charge
303 mi
93% of EPA in these conditions — 23 mi gone
EPA rated range
326 mi
Tesla Model Y · 75 kWh pack
Available from 90% charge down to a 10% buffer
242 mi
Confidence band: 223 mi – 261 mi (±8% for driving-style variance) · about 60 kWh of the 75 kWh pack
Where the range went
- Temperature×1.00 (no loss)
- Speed×0.93 (−23 mi)
- HVAC×1.00 (no loss)
- Payload×1.00 (no loss)
- Usable charge (90% − 10%)×0.80
That works out to about 30 kWh per 100 miles against the 28 kWh/100 mi EPA figure — the same loss, counted in energy instead of miles.
Winter range: the one condition that changes the answer most
At 20°F with the cabin heat running, a 300-mile EV with a heat pump is down to about 230 miles — 23% off the rating. The same car with resistive (PTC) heat lands near 203 miles, 32% off. The cold battery accounts for 54of the heat-pump car's lost miles and the heater for the other 16; with resistive heat the heater alone costs 43 miles.
Run the winter range calculator for your car and your coldest morning, read how much range EVs lose in cold weather for the loss by temperature bracket, or see the best EVs for cold weather — ranked by the miles left at 20°F rather than by the window sticker.
Full specs for the preset cars: Tesla Model Y, Hyundai Ioniq 5, Kia EV6, Chevy Equinox EV, Ford F-150 Lightning ER — or browse every model. Need more miles to start with? The longest-range EVs of 2026 ranks the field by EPA miles, which is where the number above starts.
Why EPA range is optimistic
The EPA range on a window sticker comes from a standardized test cycle — actually a weighted blend of city (UDDS) and highway (HWFET) cycles, run on a dynamometer in a temperature-controlled lab. Manufacturers can apply an adjustment factor or run a full 5-cycle test that adds cold (20°F) and high-speed segments. Most cars use the simpler 2-cycle test with the standard 0.7 adjustment. The result is a single number that represents average conditions: moderate temperature, no HVAC, the highway portion averaging only 48 mph, no headwind, no payload beyond a driver.
Real driving is none of those things. The most common cruising speed on US interstates is 70–75 mph, well above the EPA highway average; winter and summer both bring HVAC loads the test doesn't see; and at 0°F your battery itself is roughly 20–25% less efficient before you turn on the heat. EPA range is best understood as a relative rating — useful for comparing a Model Y to an Ioniq 5 — not as a trip-planning number.
The temperature penalty (battery chemistry)
Lithium-ion cells move ions through a liquid electrolyte. In cold weather that electrolyte becomes more viscous, internal resistance rises, and a larger share of the pack's stored energy is wasted as heat instead of reaching the motor. Cells also can't accept regenerative braking energy as quickly when cold, costing more range on hilly routes. Battery thermal-management systems can warm the pack, but that warming itself draws energy from the same pack.
The result, per Recurrent Auto's fleet study of more than 10,000 connected EVs: average real-world range is about 70% of EPA at 20°F, around 80% at 32°F, and back to ~100% at 70°F. Heat is friendlier — hot weather costs 5–15% above 90°F, mostly from running AC and from battery cooling. Note these are battery and ambient effects, separate from your HVAC choices.
Why highway speed eats range so fast
Aerodynamic drag scales with the square of speed: at 75 mph you are pushing air about 1.32×as hard as at 65 mph (because 75² / 65² ≈ 1.32), and at 85 mph it's 1.71×. Once the road clears 50 mph or so, drag is the dominant load on the motor — far bigger than rolling resistance or accessories. That's why a sedan with a 0.22 drag coefficient (Model 3) and an electric pickup with a 0.44 drag coefficient (F-150 Lightning) can have similar EPA ranges but very different highway behavior.
Practical rule of thumb at 70 mph in mild weather: most EVs deliver 85–90% of their EPA rating. At 80 mph that drops to 75–80%. Setting cruise 5 mph slower on a road trip is often the difference between one charging stop and two.
Heat pump vs resistive heat
Cabin heating is the largest controllable HVAC load, and how your car generates that heat matters enormously. A resistive (PTC) heater is the same physics as a toaster: every kWh of electricity becomes a kWh of heat — 100% efficient as an appliance, brutal as a range tax. A heat pump runs the AC compressor in reverse, moving heat from outside air into the cabin; at moderate temperatures it delivers 3–4 kWh of heat per kWh of electricity. Below ~10°F a heat pump's efficiency falls and many systems blend in resistive backup, narrowing the gap.
Tesla switched all models to heat pumps in late 2020. Hyundai/Kia E-GMP cars (Ioniq 5, EV6, EV9) ship with heat pumps; Mach-E standard-range trims used resistive heat originally and now use a heat pump; F-150 Lightning has resistive heat on some trims; Rivian R1T/R1S have heat pumps as of 2023. The toggle in the calculator above reflects this: in deep cold, resistive heat alone can knock 15–20% off your range, while a heat pump costs you closer to 5–8%.
Tires, preconditioning, and other smaller factors
Dedicated winter tires lose about 5–10% of range compared to all-seasons because their softer rubber compound has higher rolling resistance. That's usually worth it for snow traction, but it's a real cost. Larger aftermarket wheels and tires often cost another 3–5%. Roof boxes and bike racks can subtract 10–20% at highway speed because they spoil the car's aerodynamics.
Preconditioning — warming or cooling the cabin and battery while still plugged in — is the single most effective tool for cold-weather range. It moves the energy cost from the battery to the grid. Most EV apps support a scheduled departure or on-demand preconditioning; using it can recover 10–15% of the cold-weather range loss. If you fast-charge on a road trip, preconditioning the battery in the last 20 minutes before arrival also dramatically improves DC fast-charging speed.
For a planning estimate that combines these factors with charging cost, see the EV charging cost calculator; for how long a charging stop actually takes, the time to charge calculator pairs naturally with this one.
Frequently asked questions
Why is my EV getting less range than rated?+
Almost always a stack of ordinary conditions rather than a fault. EPA range comes from a mixed city + highway test cycle at moderate temperature with no HVAC load, and its highway portion averages roughly 48 mph — well below US interstate cruising. Drive 70+ mph and you lose 10–15%; run the cabin heater in winter and you lose 20–35% more; load four people and luggage and you lose a few percent again. Winter tires, a roof box, and a battery a few years into its life each take another slice. Put your own numbers into the calculator above: if the figure it returns is close to what your car shows, the car is normal. A car well below it in mild weather with nothing loaded is worth having the dealer check.
How does cold weather affect EV range?+
Two separate penalties land at once. The battery itself gets less efficient below about 50°F — a more viscous electrolyte and higher internal resistance mean more of the stored energy leaves as heat — and the cabin heater draws from the same pack, with no waste engine heat to borrow. Recurrent Auto's 2024 study of 10,000+ EVs found average real-world range at 20°F was about 70% of the EPA rating, and at 0°F closer to 60–65%. Roughly half of that is chemistry and half is heating, which is why a heat pump matters so much: it moves heat instead of generating it. Preconditioning the cabin and battery while still plugged in recovers a good share of the loss because that energy comes from the grid, not the pack.
What's the difference between a heat pump and resistive heat?+
Resistive (PTC) heaters turn one kWh of electricity into one kWh of cabin heat — efficient as an appliance, brutal as a range tax. Heat pumps move heat from outside air into the cabin and deliver 3–4 kWh of heat per kWh of electricity at moderate temperatures. Tesla switched to heat pumps in 2021; Hyundai/Kia E-GMP cars have them; most newer Ford, GM, and Rivian models do too. Older Bolts, Leafs, and base-trim Mach-Es use resistive heat.
How much does highway speed cost?+
Aerodynamic drag scales with the square of speed, so the energy you spend pushing air doubles between 55 and 78 mph. At 75 mph on a flat highway most EVs see roughly 80–85% of their EPA range; at 85 mph it drops below 70%. The car's drag coefficient matters too — a Model 3 (Cd 0.22) loses much less at speed than an F-150 Lightning (Cd ~0.44).
How bad is towing for range?+
Towing is the single biggest realistic hit. A 5,000-pound trailer behind an electric pickup typically cuts range by 40–60% — partly weight, but mostly the trailer's frontal area dragging through the air. A Rivian R1T rated at 410 miles often shows ~180–220 miles towing. Plan charging stops every 100–120 miles when towing, not every 300+.
Does this calculator account for terrain or elevation?+
Not explicitly. Net elevation change matters less than people expect because regen recovers most of the energy on the descent — the round trip over a mountain pass is roughly a wash. Continuous climbs without regen back (one-way trips ending at altitude) and stop-and-go mountain driving cost more. For typical mixed driving the temperature, speed, HVAC, and payload factors covered here dominate.
Related EV calculators
- EVMath home — all calculators
- EV charging cost calculator — per-mile cost at home, public L2, and DC fast.
- Time to charge calculator — minutes to your target SoC at a given charger.
- EV battery degradation calculator — the permanent range loss underneath, from age and mileage.
- EV road trip calculator — turns a range estimate into charging stops, time, and cost.
- EV winter range calculator — the cold-weather case on its own, split into battery loss and heater loss.
- Best EVs for cold weather — ranked by the miles that survive at 20°F.
- Longest-range EVs of 2026 — the EPA numbers this calculator starts from, ranked.
- GMC Hummer EV towing capacity — how far it really tows on a charge.
- Chevy Silverado EV towing capacity — 10,000 lb rated, and the longest towing range of any electric truck.
Temperature curve adapted from Recurrent Auto's 2024 winter EV-range study (10,000+ connected vehicles). EPA range, battery capacity, rated efficiency, and cabin-heat system for the preset cars come from EVMath's shared model dataset — fueleconomy.gov and manufacturer specs, 2025–2026 model years. Speed/drag curve from SAE coastdown data. Heat pump and resistive-heat figures from manufacturer disclosures and independent road-test reporting. Verify specs with the manufacturer before relying on them — model-year revisions move range numbers around.