Kilobars to millimeters of mercury conversion calculator above calculates how many millimeters of mercury are in 'X' kilobars (where 'X' is the number of kilobars to convert to millimeters of mercury). In order to convert a value from kilobars to millimeters of mercury (from kbar to mmHg) just type the number of kbar to be converted to mmHg and then click on the 'convert' button.