Pieze to newtons per square millimeter conversion calculator above calculates how many newtons per square millimeter are in 'X' pieze (where 'X' is the number of pieze to convert to newtons per square millimeter). In order to convert a value from pieze to newtons per square millimeter (from pz to N/mm²) type the number of pz to be converted to N/mm² and then click on the 'convert' button.