Calculate energy usage (kWh) and electricity cost
1000 W
1.5 h
1.5 kWh
Energy Used: 0 kWh
Cost: ₹ 0
A power consumption calculator helps you estimate how much electricity your appliances use and how much it costs. It calculates energy in kilowatt-hours (kWh), which is the standard unit used in electricity billing.
The formula used is: Energy (kWh) = Power (W) × Time (hours) ÷ 1000. This helps convert watt usage into kilowatt-hours for billing.
For example, a 1000W appliance used for 1.5 hours consumes 1.5 kWh. If your electricity rate is ₹8 per unit, the cost will be ₹12.
This calculator is useful for homeowners, electricians, and businesses to monitor energy usage, reduce costs, and improve efficiency.
Explore more tools on our home page or visit engineering calculators.