How to Use the Appliance Energy Cost Calculator
Enter an appliance's wattage, typical hours of use, and your local electricity rate per kilowatt-hour — the calculator converts these into a daily, monthly, or annual cost figure, applying the full calculation covered in the worked-example guide automatically.
The Appliance Energy Cost Calculator applies the wattage-to-cost conversion directly — here's what to enter.
Entering wattage and usage hours
Enter the appliance's wattage (found on its label or manual, as covered in the worked-example guide) and typical hours of daily use — an accurate hours estimate matters as much as an accurate wattage figure for a realistic cost result.
Entering your electricity rate
Enter your local electricity rate per kilowatt-hour, checked from a recent bill for accuracy — using a generic default rate instead of your actual local rate can produce a meaningfully inaccurate result, since electricity rates vary significantly by region and provider.