To convert millimeters (mm) to petameters (Pm), you need to divide the value in millimeters by 1e+18.
So, to convert 1400 mm to Pm: 1400 mm / 1e+18 = 1.4e-15 Pm
Therefore, 1400 millimeters is equal to 1.4e-15 petameters.
This below table contains list of length units and conversion values:
List of all different questions asking the same thing: