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EV Range Calculator - Electric Vehicle Range Estimator

Calculate how far your electric vehicle can travel on a single charge. Enter battery capacity, efficiency, and driving conditions to get an accurate range estimate.

Quick Presets

Use the usable capacity, not total. Check your vehicle spec sheet.

Typical range: 2.5–5.5 mi/kWh or 4–9 km/kWh.

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Accounts for temperature, speed, HVAC, and terrain.

Free EV Range Calculator

The EV range calculator estimates how far your electric vehicle can travel on a single charge based on your battery capacity, efficiency rating, current state of charge, and real-world driving conditions. It goes beyond the simple formula to account for the factors that actually affect your electric vehicle range day to day.

The basic formula is: Range = Battery (kWh) × Efficiency (mi/kWh) × Conditions Factor. The conditions factor accounts for temperature, speed, HVAC use, and terrain - all of which can reduce your real-world range significantly below the EPA or WLTP rated figure.

Use the quick presets to load real specs for popular EVs, or enter your own values. The calculator also shows a range breakdown across all condition levels so you can plan for best-case and worst-case scenarios.

What Affects EV Range?

Temperature

Cold weather is the biggest range killer. At 0°C (32°F), expect 20–30% less range. At -10°C (14°F), up to 40% less. Hot weather reduces range by 5–10% due to AC load.

Speed

Aerodynamic drag increases with the square of speed. Driving at 80 mph uses roughly 25% more energy than 65 mph. Highway driving typically gives less range than city driving in an EV.

HVAC (Heating & Cooling)

Electric cabin heating is energy-intensive - it can use 3–5 kW continuously. Seat heaters and steering wheel heaters are more efficient. Pre-conditioning while plugged in saves range.

Terrain & Elevation

Climbing hills uses more energy; regenerative braking recovers some on descents. Net effect depends on your route - hilly routes typically reduce range by 5–15%.

Battery Age

EV batteries degrade over time, typically losing 2–3% capacity per year. A 5-year-old battery may have 85–90% of its original capacity, reducing range proportionally.

Cargo & Passengers

Extra weight increases rolling resistance. A fully loaded vehicle uses more energy, especially on hills. Effect is smaller than temperature or speed but still measurable.

How to Use

  1. Select a preset for your vehicle, or enter your battery capacity (kWh) and efficiency (mi/kWh or km/kWh) manually.
  2. Set the state of charge slider to your current or target charge level. Most owners charge to 80% daily.
  3. Choose the driving conditions that best match your planned trip.
  4. Click "Calculate Range" to see your estimated range, a battery visualization, and a breakdown across all condition levels.

Frequently Asked Questions

How is EV range calculated?

EV range is calculated by multiplying the usable battery capacity (in kWh) by the vehicle's efficiency (miles or km per kWh). For example, a 75 kWh battery with 4 mi/kWh efficiency gives a theoretical range of 300 miles. Real-world range is lower due to factors like temperature, speed, HVAC use, and terrain.

What is a good efficiency for an electric vehicle?

Most modern EVs achieve 3–5 miles per kWh (4.8–8 km/kWh) under normal conditions. Efficient models like the Tesla Model 3 Long Range achieve around 4.5 mi/kWh. Larger SUVs and trucks typically achieve 2.5–3.5 mi/kWh. Higher efficiency means more range from the same battery.

Why is real-world range lower than the rated range?

Rated range (EPA, WLTP) is measured under controlled conditions. Real-world range is affected by: cold weather (can reduce range by 20–40%), highway speeds (aerodynamic drag increases significantly above 70 mph), HVAC use (heating uses more energy than cooling), cargo weight, and terrain (hills reduce range).

What is usable battery capacity vs total capacity?

EV manufacturers reserve a buffer at the top and bottom of the battery to protect cell longevity. A car with a 82 kWh total capacity might have only 75 kWh usable. Always use the usable capacity for range calculations. This information is usually in the vehicle's spec sheet.

How does temperature affect EV range?

Cold temperatures reduce battery chemical efficiency and increase energy use for cabin heating. At 0°C (32°F), range can drop 20–30%. At -10°C (14°F), drops of 40% are common. Hot weather has a smaller effect — typically 5–10% reduction due to air conditioning load.

What is the 80% charging rule for EVs?

Most EV owners charge to 80% daily to preserve battery health and reduce charging time (the last 20% charges much slower). This calculator lets you set a custom state of charge so you can estimate range from any charge level.

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