Millibars to newtons per square meter converter above calculates how many newtons per square meter are in 'X' millibars (where 'X' is the number of millibars to convert to newtons per square meter). In order to convert a value from millibars to newtons per square meter (from mbar to N/m²) simply type the number of mbar to be converted to N/m² and then click on the 'convert' button.