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