How To Work Out Watts Per Hour. Not every device is easy to find. So the number of kW is the amount of power an electrical device uses in order to run and a kilowatt-hour kWh is the amount of energy that an appliance uses.
Watthours is a measure of energy and watts is a unit of power. Electricity cost calculator The calculations are based on the device wattage and electricity price per kilowatt-hour kWh that your local utility company charges. To convert the power in watts to kilowatt-hours multiply 100 watts by 1 hour then divide by 1000 to find the energy usage in kWh.
Hours used in month use an average Hours.
Hours used in month use an average Hours. Enter the average power consumption of the device in watts. KWh x pence Cost in pence to run the item for 1 month. Hours used in month use an average Hours.
