Speed of light to micrometers per second converter on this page calculates how many micrometers per second are in 'X' speed of light (where 'X' is the number of speed of light to convert to micrometers per second). In order to convert a value from speed of light to micrometers per second (from c to μm/s) type the number of c to be converted to μm/s and then click on the 'convert' button.