Independent EV car tool

EV Car Charging Time and Cost Calculator

Connect required kilometres with charging time, electricity cost, cost per kilometre and optional home-load headroom.

Step 1

Enter car and charger details

Use usable battery capacity, realistic range and exact vehicle/charger power limits.

km
km
kWh
kW
kW
%
₹/kWh
Optional home-load screen

Enter both values or leave both blank. This is arithmetic screening, not installation approval.

kW
kW

Runs in your browser. No entered data is stored or sent.

Step 2

Charging estimate

Enter car, charger and tariff values to see the estimate.

How the calculation works

Battery energy = usable battery kWh × distance ÷ range. Accepted wall power is the lower of charger rated AC output and vehicle maximum AC acceptance. Estimated battery-side power = accepted wall power × efficiency. Time uses battery-side power; cost uses wall energy.

Important limits

Range and charging vary with conditions and charging taper. Home-load output is arithmetic only and does not approve an installation.

Sources

NITI Aayog e-AMRIT

U.S. Department of Energy — AC EVSE and onboard charging

Use this calculator to estimate EV car charging time, electricity cost per kilometre, charging bottlenecks and optional home-load headroom from vehicle and tariff data. Enter values for the vehicle, charger and electricity plan you are actually evaluating.

What to enter

Use the vehicle and electricity tariff data requested by the calculator and check the units before calculating. Where the template offers the option, add the relevant home-load information for a headroom estimate. The template controls the actual fields and calculations; this supporting copy does not replace its labels, formulas or result logic.

How to read the estimate

Review charging time and electricity cost per kilometre together. Treat any charger bottleneck or home-load headroom result as a screening estimate, not proof of charger, wiring or supply suitability. Actual charging time and energy use can vary with the vehicle, battery, charger and operating conditions.

Before installing a charger

Verify the vehicle and charger specifications, connector compatibility, supply capacity and manufacturer instructions. Have a qualified electrical professional assess the actual home load, circuit, earthing and protective equipment before installation or use.