Kilometers per hour to micrometers per second converter above calculates how many micrometers per second are in 'X' kilometers per hour (where 'X' is the number of kilometers per hour to convert to micrometers per second). In order to convert a value from kilometers per hour to micrometers per second (from km/h to μm/s) simply type the number of km/h to be converted to μm/s and then click on the 'convert' button.