🔌 Appliance Electricity Cost Calculator
See what any device costs to run per day, month and year — from a gaming PC to a space heater. The wattage is printed on the label or the power supply.
Result
Estimates only. Results depend on your inputs and are not financial, tax or legal advice.
How this is calculated
Energy use is watts × hours ÷ 1,000 = kWh. Multiplied by your electricity price, that gives the cost. Many devices use less than their label maximum most of the time.
Frequently asked questions
How do I find the real power draw?
A plug-in energy meter shows the actual watts and is the most reliable way to measure.
What does standby cost?
A device drawing 5 W around the clock uses about 44 kWh a year — around $7 at $0.17 per kWh.