Electricity Bill Calculator
Units consumed and running cost for any appliance.
Your result appears here
Fill in the fields on the left and press Calculate. The answer, the breakdown and a copy button all land in this card.
How it is calculated
Units (kWh) = watts × hours × days ÷ 1,000; Cost = units × tariff + fixed charges
One unit on your bill is one kilowatt-hour: a 1,000 watt appliance running for one hour.
Worked example
A 1,500 W air conditioner used 6 hours a day for 30 days uses 270 units. At ₹8 a unit that is ₹2,160 a month.
Questions people ask
On the appliance label, the rating plate or the manual. For inverter air conditioners and refrigerators the label figure is a maximum, so real use is often lower.
Bills add fixed charges, duty, fuel surcharges and often slab tariffs that rise with consumption. This shows one appliance's share of the energy cost.
A little. A few watts left on all month adds up across many devices, though it is minor next to heating, cooling and water heating.