Calculate your result
Enter your figures below. Values stay in your browser.
How to use EV vs Petrol 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
EV energy cost = km/100 × kWh/100km × electricity price. Petrol cost = km/100 × L/100km × fuel price.
Worked example
For 1,000 km, 18 kWh/100km at 0.18/kWh costs 32.40. Petrol at 7.5 L/100km and 1.60/L costs 120.00, a difference of 87.60.
What the result means
Enter grid-inclusive EV consumption if you want charging losses included. This compares energy bills, excluding purchase price, servicing and depreciation.
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.