Appliance Energy Cost Calculator
Turn power and operating time into kWh and cost.
Calculation
Estimated cost
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How to use this tool
Enter watts or kilowatts, daily runtime and the number of days. For equipment that cycles, estimate the fraction of runtime spent at the stated power. Use 100% duty cycle with measured average power to avoid reducing the estimate twice. You can save a named configuration for power, runtime, days and duty cycle. Use Save rate preferences to save the currency and electricity rate separately.
Real-Life Examples
- One-person home office
- Air conditioning during an eight-hour window
- Use an average reading for a cycling refrigerator
- Estimate the cost of a bank of LED lights
- Compare television picture modes
- Turn a washer cycle reading into a monthly cost
- Compare drying time after a faster spin
- Count oven preheat energy separately
- Estimate a humid week in the basement
- Price a router and idle network accessory