Meters per minute to millimeters per second conversion calculator shown above calculates how many millimeters per second are in 'X' meters per minute (where 'X' is the number of meters per minute to convert to millimeters per second). In order to convert a value from meters per minute to millimeters per second (from m/min to mm/s) simply type the number of m/min to be converted to mm/s and then click on the 'convert' button.