Nanojoules to kilowatt hours converter above calculates how many kilowatt hours are in 'X' nanojoules (where 'X' is the number of nanojoules to convert to kilowatt hours). In order to convert a value from nanojoules to kilowatt hours (from nJ to kWh) just type the number of nJ to be converted to kWh and then click on the 'convert' button.