Nanowatts to ergs per second converter on this page calculates how many ergs per second are in 'X' nanowatts (where 'X' is the number of nanowatts to convert to ergs per second). In order to convert a value from nanowatts to ergs per second (from nW to erg/s) simply type the number of nW to be converted to erg/s and then click on the 'convert' button.