*Question*:How do you calculate the energy used by a device in kilowatt hours?

Number of kWh's is calculated as = Number of kW's x number of hours.

If the numbers you have are not in kW's or hours then you must convert them.

*Question*:How do you calculate the energy used by a device in kilowatt hours?

Number of kWh's is calculated as = Number of kW's x number of hours.

If the numbers you have are not in kW's or hours then you must convert them.