Centimeters per second to kilometers per hour conversion calculator shown above calculates how many kilometers per hour are in 'X' centimeters per second (where 'X' is the number of centimeters per second to convert to kilometers per hour). In order to convert a value from centimeters per second to kilometers per hour (from cm/s to km/h) just type the number of cm/s to be converted to km/h and then click on the 'convert' button.