Electric Vehicle Efficiency & Range Calculators

EV Stats helps you understand your electric vehicle’s real-world performance. Work out your average efficiency from battery capacity, state of charge and distance travelled, then estimate how far you can drive between charges — in kilometres or miles.

Free EV calculators

Efficiency Calculator

Work out your electric vehicle’s average efficiency from battery capacity, state of charge and distance travelled. See energy used, distance per kWh and consumption in kWh/km, Wh/km, kWh/mi or Wh/mi.

What you need
Battery capacity, start & end SOC, distance travelled
What you get
Average efficiency and consumption in your chosen unit
Open efficiency calculator

Range Calculator

Estimate your electric vehicle’s expected driving range between two charge levels using battery capacity, average efficiency and state of charge — in kilometres or miles.

What you need
Battery capacity, average efficiency, current & end SOC
What you get
Expected range and usable energy between charge levels
Open range calculator

How it works

  1. Step 1

    Enter your EV’s battery capacity in kWh and your state of charge (SOC) readings, or your average efficiency.

  2. Step 2

    Add the distance travelled or the charge levels you plan to drive between, in kilometres or miles.

  3. Step 3

    Get instant results: average efficiency, energy consumption, and expected driving range.

Frequently asked questions

How do I calculate my EV’s efficiency?

Enter your battery capacity (kWh), the starting and ending state of charge, and the distance travelled. The calculator works out the energy used and divides it by distance to give efficiency in kWh/100km, Wh/km or mi/kWh.

How is driving range estimated?

Range is estimated from your battery’s usable energy (capacity × SOC difference) and your average efficiency. Real-world range varies with driving style, weather and terrain.

Do the calculators support miles?

Yes. Both calculators let you switch between kilometres and miles (mph/kWh, Wh/mi and kWh/mi), and the efficiency calculator also supports the metric efficiency units.