How to use this tool
Enter appliance power in watts, hours used per day, days per month and your tariff per kWh. Read the kWh consumption, daily and monthly cost estimates.
Quick steps
- Enter the appliance wattage and daily hours of use.
- Enter billing days and your electricity price per kWh.
- Compare daily, monthly, yearly consumption and costs.
Practical tip
Enter the actual measured or average power consumption where possible. Air conditioners and refrigerators cycle on and off; utility bills may include tiered rates, taxes and fixed charges.
Common questions
How do watts convert to kWh?
Multiply power in watts by hours used, then divide by 1,000.
Can I use my own currency?
Yes. Enter the price in your currency per kWh; all cost results use the same currency.
Will this match my electricity bill?
Not necessarily. Tiered tariffs, surcharges and appliance duty cycles can change actual billed amounts.