What is a kilowatt-hour (kWh)?

A kilowatt-hour (kWh) is a unit of energy equivalent to one kilowatt (1,000 watts) of power expended for one hour. Utility companies bill customers based on the number of kWh they consume.

Is this calculator free to use?

Yes, this online electricity cost calculator is 100% free to use.

Where can I find my cost per kWh?

Your electricity rate is usually printed on your monthly utility bill. It might be listed as 'cost per kWh' or 'supply charge'. If you can't find it, you can search online for the average electricity rate in your state or region.

Electricity Cost Calculator | Conversores Online

Electricity Cost Calculator

Calculate your electricity costs.

Electricity Cost Calculator

Estimate how much it costs to run an appliance.

Appliance Wattage (Watts)

Hours Used per Day

Cost per kWh ($)

Estimated Running Costs

Daily

$0.12

Monthly

$3.65

Yearly

$43.83

How to Use the Free Online Electricity Cost Calculator

Find your appliance's wattage (usually on a sticker on the device) and enter it in the 'Appliance Wattage' field.
Estimate how many hours per day you use the appliance.
Enter your electricity rate in dollars per kilowatt-hour (kWh). You can find this on your utility bill.
The calculator will instantly show you the estimated daily, monthly, and yearly cost to run the appliance, completely free and online.

Frequently Asked Questions