Enter your EV's battery capacity, current charge level, and driving conditions to estimate your remaining range. Adjust for speed, temperature, and terrain to get a realistic picture of how far your electric vehicle can go before the next charge. Also try the Compression Ratio Calculator.
Estimated Range
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Usable Battery Energy
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Combined Efficiency Factor
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Estimated Consumption
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Range Lost vs. Rated
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The estimate starts from your manufacturer's rated range, scales it by your current charge level, then applies penalty factors for speed, temperature, terrain, climate control, and vehicle load. Each factor reduces (or in some cases slightly improves) the baseline range proportionally to reflect real-world driving conditions. See also our Gear Ratio — Bicycle Gear Ratio.
Lithium-ion batteries lose efficiency at low temperatures because the chemical reactions inside the cells slow down. Additionally, cabin heating in cold weather draws significant power directly from the battery — unlike petrol cars that recycle waste engine heat. In extreme cold, range can drop by 30–40% compared to mild conditions.
Speed has a large impact on range due to aerodynamic drag, which increases with the square of your speed. Driving at 130 km/h can use 50–60% more energy per kilometre than driving at 80 km/h. For maximum range, staying below 100 km/h on highways makes a significant difference.
Rated range (EPA or WLTP) is measured under controlled laboratory conditions designed to reflect typical driving. Real-world range varies based on your specific driving speed, weather, terrain, payload, and HVAC use. Most drivers achieve 80–90% of their rated range under normal mixed-driving conditions. You might also find our Traffic Flow — Traffic Density useful.
Yes — climbing hills requires significantly more energy, which reduces your range. However, regenerative braking on descents recovers some of that energy and converts it back into battery charge. The net effect still means hilly or mountainous terrain uses more energy overall, but the penalty is less severe than pure uphill driving.
The usable battery capacity is listed in your vehicle's owner manual or on the manufacturer's spec sheet. It is slightly lower than the total (gross) battery size because automakers reserve a small buffer at both the top and bottom of charge to protect long-term battery health. For example, a 82 kWh gross battery might have 77 kWh of usable capacity.
Most EV manufacturers recommend daily charging to 80% to preserve long-term battery health. A full 100% charge is best reserved for long trips where you need maximum range. Regularly charging to 100% or letting the battery drain near 0% can accelerate battery degradation over time.
To extend range, drive at moderate speeds (80–100 km/h), pre-condition the cabin while still plugged in, use eco or range mode, reduce unnecessary cargo weight, and plan your route to avoid steep climbs where possible. Using seat heaters instead of full cabin heating in cold weather also saves energy.