Electricity Cost Calculator
Calculate electricity costs for appliances based on wattage, usage hours, and electricity rate.
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Monthly Cost
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Monthly kWh
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Yearly Cost
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Daily Cost
Recent Calculations
What Is Electricity Cost?
Electricity cost depends on an appliance's wattage, how long it runs, and your electricity rate. This calculator estimates the cost to run any electrical device.
Formula
Cost = (Watts × Hours × Days) / 1000 × Rate per kWhExample
A 1000W space heater running 8 hours/day at $0.12/kWh costs $28.80/month.
Frequently Asked Questions
How do I find my electricity rate?
Check your electric bill — it shows your rate in cents or dollars per kilowatt-hour (kWh). US average is about 12-16¢/kWh.
What uses the most electricity?
HVAC systems (heating/cooling), water heaters, dryers, and ovens are typically the biggest energy consumers.