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EV Charging Cost Calculator

Charging cost and cost per km for EVs.

kWh
%
%
₹/unit

Home ₹6–9; public fast chargers ₹18–25

%

About 85–90% at home

km
Charging cost
₹160.00
20.0 units from the meter
Range added
126 km
18.0 kWh into the battery
Cost per km
₹1.27
Petrol: ₹7.00/km
Compare with petrol
₹/litre
km/l

For 1,000 km: EV about ₹1,270 vs petrol about ₹7,000, saving ₹5,730.

How to use

  1. 1Pick a preset or enter your battery size.
  2. 2Set the charge level before and after charging.
  3. 3Enter the electricity rate per unit.
  4. 4Read the cost, range added and cost per km versus petrol.

Frequently asked questions

How many units does a full charge take?

About the battery size divided by charging efficiency. A 30 kWh battery from 0 to 100% draws roughly 33 units from the meter.

Why is public charging costlier?

DC fast chargers charge ₹18–25 per unit plus GST, compared with ₹6–9 at home, but they're much quicker.

Why charge only to 80%?

Charging slows down after 80%, and staying between 20% and 80% day to day is gentler on the battery.

Is EV really cheaper than petrol?

With home charging, running cost is usually ₹1–1.5 per km versus ₹6–8 for a petrol car.

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