*What is 1 MPa equal to in N/mm2?*

N/mm2 is not a very common pressure unit, but it can be calculated as follows:

1 MPa = 1,000,000 Pa

If 1 Pa = 1 N/m2 = 1 N / (1,000 mm x 1,000 mm) = 1/1,000,000 N/mm2

Then 1 MPa = 1,000,000 Pa = 1,000,000 x 1/1,000,000 N/mm2 = 1 N/mm2

Therefore they equal exactly the same value.