How to use it
- Enter battery capacity and current and target percentages.
- Enter electricity price per kWh.
- Enter estimated charging efficiency and calculate.
EV Charging Cost Calculator
Estimate grid energy and cost for a selected battery charge increase.
Important: This calculator provides estimates only. It is not safety, legal, mechanical, or professional automotive advice. Always follow manufacturer specifications and consult a qualified professional when needed.
About the EV Charging Cost Calculator
This estimator separates energy added to an EV battery from the larger grid energy needed after charging losses.
Estimation logic
Battery energy equals capacity × charge-level increase. Grid energy divides battery energy by efficiency, and cost equals grid energy × electricity price.
Example
Charging a 75 kWh battery from 20% to 80% adds 45 kWh. At 90% efficiency, approximately 50 kWh comes from the grid.
Notes
Actual energy and cost vary with the vehicle, charger, battery temperature, battery management, session fees and charging losses.