Electricity Cost Calculator
Estimate appliance electricity usage and monthly or yearly running cost from watts, runtime, quantity, and your electricity rate.
Electricity Cost Calculator
Estimate how much it costs to run an appliance before the bill arrives
Usage details
Estimated monthly cost
$64.80
Based on 1 device(s) running 8 h/day for 30 days/month
Daily cost
$2.16
Annual cost
$777.60
Monthly usage
360 kWh
Annual usage
4,320 kWh
Connected load
1.5 kW
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Frequently Asked Questions
How do you calculate electricity cost?
Convert watts to kilowatts, multiply by daily hours to get kWh per day, then multiply by your electricity rate. Monthly and yearly estimates scale that daily usage using the selected days per month.
What is kWh?
Kilowatt-hour is the amount of energy used by a 1-kilowatt device running for 1 hour. Utilities typically bill electricity in cost per kWh.
Does this include tiered rates or taxes?
No. This tool assumes one flat electricity rate. If your utility has time-of-use pricing, block tariffs, taxes, or fixed service charges, use the result as a planning estimate only.
Why can monthly and yearly totals differ from my bill?
Real bills can vary because appliances cycle on and off, standby load changes throughout the day, and utilities may use different billing periods. The calculator is designed for quick estimation, not invoice reconciliation.