What this calculator tells you
The result is an energy-cost estimate. Charging losses, battery conditioning, weather, speed, charger pricing and session fees can make the amount paid differ from the simple calculation.
Formula
Worked example
Useful for
- Planning monthly EV charging cost
- Comparing home and public charging price assumptions
- Comparing an EV energy budget with a fuel vehicle
Common mistakes
- Using kWh/100 km in a field that expects km/kWh without converting it.
- Ignoring charging losses or session fees when they are material.
- Assuming one electricity price applies to every charger you use.
How to get a more useful estimate
Use inputs that match the decision you are actually making. If a price, rate, efficiency or usage figure can vary, run the calculator more than once with a low, expected and high case. Keep units consistent, avoid rounding intermediate values too early, and separate costs that this calculator does not include.
Frequently asked questions
What efficiency unit does this page use?
Distance per kWh, shown by default as km/kWh.
Does the estimate include charging losses?
No. It uses the vehicle efficiency and electricity price directly.
Can I compare home and public charging?
Yes. Run the calculator again with the different price per kWh.
Related tools and guides
This calculator is a planning tool. For contracts, taxes, regulated charges, loans or other decisions with legal or financial consequences, verify the final figures and terms with the relevant provider or authority.