Calculate your result
Enter your figures below. Values stay in your browser.
How to use EV Charging Cost Calculator
- Enter your figures in the units shown beside each field. Keep monetary inputs in the same currency; money results are currently displayed in USD.
- Select the unit standard where the form offers a choice, then choose Calculate.
- Read the breakdown and compare the worked example below. Change one assumption to see its effect.
Formula used
Grid energy = energy added to battery ÷ charging efficiency. Cost = grid energy × electricity price.
Worked example
Adding 60 kWh at 90% efficiency requires 66.6667 kWh from the grid. At 0.18 per kWh the energy costs 12.00.
What the result means
Enter energy added in this session, not necessarily total battery capacity. Session fees and time-based charges are excluded.
Check your result
Results retain calculation precision internally and round for display. Keep the input values with the result so you can reproduce it. Use Reset to restore the example inputs, or Copy result to copy the displayed answer.
If the result does not agree with your own calculation, report the page, inputs and expected answer. See our methodology and reference sources for the standards used.
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Formula, worked example and limitations updated September 10, 2026.