Find the units and rupees any appliance costs you per day, month and year from its wattage and hours of use.
Estimates only. Real use depends on the room, settings and the appliance's star rating.
Look at the label or manual. If you only know amps, multiply by 230 volts.
One unit is one kilowatt-hour: a 1,000 W appliance running for an hour.
Fridges and ACs cycle on and off, so they draw full power only part of the time.
No. Everything is worked out in your browser and nothing you type is sent to a server.