How do you calculate kWh per day?

How do you calculate kWh per day?

Multiply by hours used per day. The wattage tells you the rate energy is consumed while the appliance is active. Multiply the wattage by the number of hours the device runs during an average day. Example: If the microwave runs for half an hour each day, multiply 780 watts x 0.5 hours / day = 390 watt hours per day.

How many watts is a kilowatt hour?

1,000 wattsA kilowatt-hour is 1,000 watts used for one hour. As an example, a 100-watt light bulb operating for ten hours would use one kilowatt-hour. Below are some examples of electrical appliances found in most homes. These examples are using a 10 cents per kWh rate.