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