Home Electricity Usage Cost Calculator
Enter an appliance’s wattage, how many hours a day you use it, and your electricity rate to estimate its running cost.
Home Electricity Usage Cost Calculator
Calculate the daily, monthly and annual running cost of an appliance from its wattage, usage hours and your electricity rate.
Every appliance’s running cost comes down to its wattage, how long you run it, and your price per kilowatt-hour (kWh). This calculator converts wattage and hours into kWh used, then multiplies by your electricity rate to estimate daily, monthly and annual cost.
Example
- With the default values shown above, this calculator returns: Daily Cost ≈ USD 0.45; Monthly Cost ≈ USD 13.50; Annual Cost ≈ USD 164.25.
Frequently Asked Questions
Where do I find my appliance’s wattage?
Check the label on the appliance or its manual, usually listed in watts (W) — if it lists amps and volts instead, multiply them together to estimate watts.
Where do I find my electricity rate?
Your utility bill usually lists a price per kilowatt-hour (kWh); if it only shows a total bill, divide the total charge by your total kWh used for the period.