Bike, Car & Travel

EV Charging Cost Calculator: Cost per Charge and per km at Home or Public Chargers

Free tool · Updated October 3, 2026 · By CouponTalk

Your result

Enter your measurements to see your result.

Quick answer

Charging cost = energy added × price per kWh, plus about 10% lost as heat. Charging a 30 kWh car from 20% to 80% adds 18 kWh; with losses that is about 19.8 kWh, or ₹158 at a home tariff of ₹8 per kWh. At a public fast charger charging ₹20 per kWh, the same charge costs about ₹396. At 7 km per kWh, home charging works out to about ₹1.3 per km.

How to use this calculator

Enter your battery size from the spec sheet.
Set the charge level you start and stop at.
Enter the price per kWh at home or at the charger, and your km per kWh.

Example charging costs

Includes about 10% charging loss (example prices)
Vehicle	Charge added	Home (₹8/kWh)	Public DC (₹20/kWh)
Electric scooter, 3 kWh	20% → 100%	₹21	₹53
Small EV car, 30 kWh	20% → 80%	₹158	₹396
Large EV car, 60 kWh	20% → 80%	₹317	₹792

Prices and efficiency vary by vehicle, charger and weather.

Frequently asked questions

What is my home tariff per kWh?

Check your electricity bill: it lists the rate per unit (1 unit = 1 kWh), which often rises in higher slabs.

Why charge to 80%?

Charging slows down above 80% and regular 100% charging can wear the battery faster. Most makers suggest 80% for daily use.

Is GST included in public charger prices?

Some apps show prices before GST; check the final amount on the receipt.

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