How to Calculate Your Electricity Usage Understanding how much your household appliances add to your energy bill helps you identify power hogs and cut monthly utility costs. To use this calculator, locate the wattage rating on your device’s label (or user manual), estimate how many hours it runs per day, and enter your local electric company’s rate per kilowatt-hour (kWh).

Formula Used:

• Daily kWh = (Wattage × Hours Used) ÷ 1,000
• Daily Cost = Daily kWh × Electricity Rate ($/kWh)
• Monthly Cost = Daily Cost × 30 days
• Yearly Cost = Daily Cost × 365 days

Frequently Asked Questions

• Where do I find my appliance wattage? Look for a sticker or stamped electrical label near the power cord, on the back, or under the unit.
• What is the average electricity rate? Most residential electricity rates range between $0.12 and $0.20 per kWh, depending on your state or province.