EV Range Calculator
Estimate electric car range, reserve margin, arrival charge, and charge needed
Usable pack size before age and charge limits.
Battery percentage at the start of the trip.
Charge you want left when you arrive.
Capacity remaining compared with the original pack.
Vehicle consumption from the dashboard or trip planner.
Add for cold, speed, hills, cargo, or headwind.
One-way route distance before round-trip doubling.
Calculation Steps
How EV Range Is Estimated
Available energy above reserve is divided by adjusted vehicle consumption.
Available energy
The calculator starts with battery capacity, applies battery health, then keeps only the charge above your planned reserve.
Energy use
EV efficiency is entered as kWh per 100 miles or kilometers. A higher value means the car uses more energy per distance.
Trip reserve
Arrival charge and reserve margin show whether the planned trip still leaves the battery buffer you want.
EV Range Examples
Quick estimates for daily driving, winter range, and road-trip reserve planning.
Daily range check
A 75 kWh pack at 80% charge with a 10% reserve and 32 kWh/100 mi has about 164 miles available.
Cold weather adjustment
Adding a 20% consumption adjustment lowers range because each mile or kilometer uses more energy.
Round-trip planning
Round-trip mode doubles the route distance and shows whether the car arrives above the reserve target.
EV Range Calculator FAQ
Common questions about electric car range, reserve charge, battery health, and trip planning.
How accurate is an EV range calculator?
It is a planning estimate. Real range changes with speed, temperature, elevation, wind, tire pressure, cargo, HVAC use, and how close the vehicle is to its rated efficiency.
What reserve charge should I use?
Use the charge level you want left when you arrive. Many drivers plan with a 10% to 20% reserve so delays, detours, or charger problems do not consume the full battery margin.
What does consumption adjustment mean?
It adjusts the car's normal kWh per 100 miles or kilometers for tougher conditions. Use a positive value for cold weather, high speed, mountains, cargo, or headwind.
Why include battery health?
Battery health reduces usable capacity. A 75 kWh pack at 90% health is treated like 67.5 kWh before state of charge and reserve are applied.
How is this different from the EV charging cost calculator?
This calculator focuses on whether a trip fits your current charge and reserve. The EV charging cost calculator focuses on kWh, electricity price, charging loss, and session cost.