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