prove that 1 n/mm2 is equivalent to 1 mpa?
The answer is 1. We assume you are converting between newton/square millimetre and megapascal. You can view more details on each measurement unit: N/mm2 or MPa The SI derived unit for pressure is the pascal. 1 pascal is equal to 1.0E-6 N/mm2, or 1.0E-6 MPa.