EV Calculator FAQs

You calculate an EV's running cost by multiplying its energy use (kWh per km) by your electricity tariff (₹ per unit). For example, a car using 0.15 kWh/km at ₹8 per unit costs about ₹1.2 per km. Our EV vs petrol cost calculator does this automatically and compares it with fuel.

EV range is calculated by dividing usable battery capacity (kWh) by energy consumption (kWh per km). A 40 kWh battery using 0.16 kWh/km gives roughly 250 km. Real-world range runs 15 to 25 percent below the ARAI claim. Estimate a realistic figure with our EV range calculator.

Charging time is roughly the battery capacity (kWh) divided by the charger's power (kW), plus some overhead. A 40 kWh battery on a 7 kW home charger takes about 6 hours; a 50 kW DC charger does 10 to 80 percent in under an hour. Our range and charging calculator helps you estimate it.

EV loan EMI depends on the loan amount, interest rate and tenure, using the standard reducing-balance formula. Rather than doing it by hand, enter your down payment, rate and tenure into our EV EMI calculator to see your monthly instalment, total interest and total payable instantly.

Charging an EV at home in India costs roughly ₹1 to ₹1.5 per km, depending on the model's efficiency and your electricity tariff — far below petrol. Public DC fast charging costs more per unit. Work out your exact figure with the EV vs petrol cost calculator.

Compare EV and petrol running cost by working out cost per km for each: electricity use × tariff for the EV, versus fuel consumption × petrol price for the car. EVs almost always win. Our EV vs petrol cost calculator does the full comparison, including monthly and yearly savings.

A BaaS (Battery as a Service) calculator works out whether buying an EV without its battery and paying a per-km battery rental saves you money versus owning the battery outright. It weighs the upfront saving against total rental over your ownership period. Try our BaaS calculator with 2026 plan presets.

Estimate EV savings by subtracting the EV's running cost per km from the petrol car's, then multiplying by your annual distance. Add lower maintenance to the total. Over five years the difference is often lakhs. The EV vs petrol calculator projects your savings from your own usage.

EV range calculators give a realistic estimate, not a guarantee. They are more accurate than optimistic ARAI figures because they account for real consumption, but actual range still varies with driving style, speed, AC use, load and terrain. Treat the output as a sensible planning figure and keep a buffer for daily use.

Home charging cost for a full charge equals battery capacity (kWh) × your electricity tariff (₹ per unit). A 40 kWh battery at ₹8 per unit costs about ₹320 for a full charge. Divide by range for cost per km. See our home EV charging cost guide for a worked example.

Work out the battery size you need from your longest regular trip and how often you can charge. Multiply your typical daily km by consumption (about 0.15 kWh/km for a car) and add a comfortable buffer. If you charge at home nightly, a smaller battery is fine; frequent long trips need a bigger one.

EV per-km cost equals energy consumption (kWh per km) × electricity tariff (₹ per unit). For a scooter using 0.03 kWh/km at ₹8 per unit, that is about ₹0.24 per km. Our cost calculator works this out for you and compares it against petrol.