Electricity Cost Calculator

Enter the wattage of your appliance, how many hours per day you use it, the number of days, and your electricity rate in dollars per kilowatt-hour. The tool calculates energy consumption in kWh and multiplies by your rate to give daily, monthly, and annual cost estimates.

Your electricity rate is listed on your utility bill, usually shown as a cost per kWh. In the United States, the average residential rate is around $0.12 to $0.16 per kWh, but it varies by state and provider.

A kilowatt-hour is a unit of energy equal to using 1,000 watts for one hour. For example, a 100-watt light bulb running for 10 hours consumes 1 kWh of electricity.

Yes! All processing happens entirely in your browser. Your data is never sent to any server. No data is collected, stored, or transmitted.

The estimates are based on constant usage at the wattage you enter. Actual costs may vary due to fluctuating electricity rates, standby power consumption, and appliances that cycle on and off during operation.