💡 Electricity Cost Calculator
Estimate how much it costs to run an appliance daily, monthly, and yearly based on its wattage and your electricity rate.
Appliance & Usage
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Actual costs may vary due to tiered utility rates, taxes, delivery fees, and fluctuations in appliance power draw.
How the Electricity Cost Calculator Works
Electricity is billed in kilowatt-hours (kWh) — the amount of energy used by a 1,000-watt device running for one hour. This calculator converts your appliance's wattage and usage time into kWh, then multiplies by your electricity rate.
Formula
Daily Cost = Daily kWh × Rate ($/kWh)
Monthly Cost = Daily Cost × Days Used Per Month
Yearly Cost = Daily Cost × 365
Frequently Asked Questions
How do I find my appliance's wattage?
Check the label or nameplate on the appliance, its user manual, or use a plug-in watt meter for the most accurate reading. If only amps and volts are listed, wattage equals amps × volts.
What is a kilowatt-hour (kWh)?
A kilowatt-hour is the energy used by a 1,000-watt appliance running for one hour. It's the standard unit utility companies use for billing electricity.
Where do I find my electricity rate?
Your electricity rate ($/kWh) is listed on your utility bill. The US national average is roughly $0.15-$0.17 per kWh, but rates vary significantly by region and provider.