Nautical miles per day to kilometers per minute conversion calculator above calculates how many kilometers per minute are in 'X' nautical miles per day (where 'X' is the number of nautical miles per day to convert to kilometers per minute). In order to convert a value from nautical miles per day to kilometers per minute (from nmi/d to km/min) simply type the number of nmi/d to be converted to km/min and then click on the 'convert' button.