EV Charging Cost Calculator

In 2026, the first question every new EV driver asks — from a Tata Nexon owner in Pune to a Tesla Model Y owner in Phoenix to a BYD Seal driver in Guangzhou — is deceptively simple: “What does it actually cost to charge?” The honest answer is “it depends,” and the variables — battery size, real-world efficiency, your electricity tariff, whether you charge at home or on a highway rapid charger, and your country’s grid — swing the number by 10× or more. This console exists to turn that fog into one trustworthy figure for your car, in your country, at your charger.

The dominant insight, repeated across every market we researched, is that home charging is where EVs win and public DC fast charging is where they don’t. US home charging costs about 5¢ a mile; the public DC fast network averages ~$0.47/kWh, which works out to roughly 13¢ a mile — frequently more than a 30 MPG petrol car. In India the gap is even starker: home charging near ₹1/km against ₹6+/km for petrol, while public fast charging at ₹18–26/kWh narrows the win. The single most valuable move most drivers can make is shifting to an off-peak overnight tariff, which cuts the rate 40–70% on time-of-use plans and saves a typical household $300–$600 (or thousands of rupees) a year.

Efficiency is the other lever people misjudge. Manufacturers quote optimistic test-cycle figures — EPA combined in the US, WLTP in Europe, ARAI in India, CLTC in China — and the CLTC/ARAI numbers in particular run 25–40% above real life. We derate them so your cost-per-km isn’t a showroom fantasy, and we add 8–15% charging losses, because your electricity meter always spins more than the energy that reaches the battery. Cold weather compounds this: a car that returns 3.5 mi/kWh in summer may manage 2.6 in deep winter, lifting your cost per mile by the same proportion.

Finally, charging cost is also a climate question. Driving on electricity moves your tailpipe to the power plant, so the CO₂ depends on the grid: about 384 gCO₂/kWh in the US, 560 in China, and 708 on India’s coal-heavy grid (Ember, 2024). Even in the worst case the EV still emits roughly two-thirds less per mile than burning petrol — and as grids decarbonise, every existing EV gets cleaner without changing a thing. The figures here trace to primary sources — the US EIA and DOE, Eurostat and Ofgem, India’s ARAI and state DISCOM tariffs, China’s CLTC ratings, plus EPA, ICCT and Ember — and the tool is reviewed twice a year.