About Units

Below are information about the units used at import and export.

At import, as the unit system used in 3DEXPERIENCE is MKSA (radians, mm) data from all STEP files are converted into such units.

At export, the data are exported to the Units (mm or inch) defined under Export, in the STEP Exchange section of the Preferences, independently of the session unit.

Note: AP242 XML .stpx or .stpxZ files do not support the import/export from/to inch:
  • At import SI units are supported (meter, cm, mm,...)
  • At export, if you have set the unit preference to inch, the unit of the assembly .stpx or .stpxZ file is mm (AVP and instance position transformation are impacted), and the unit of the external geometry .stp or .stpZ files is inch.