Convert XMCD to MCDX

Both .xmcd and .mcdx files come from Mathcad / Mathcad Prime from PTC, albeit from different versions of the software. The main difference between these two formats being is that .xmcd files come from version 15 or earlier of the software known simply as Mathcad, while the .mcxd are from the later versions called Mathcad Prime. Version 15 being the last version of original Mathcad, released in 2010 and supported up until 2017. As of 2023, the last version is Mathcad Prime 8 released in 2022.

Thus users searching for xmcd to mcdx conversion are typically looking for options how to import older files into modern software, in this particular case MathCad to Mathcad Prime.

How to convert old Mathcad files to Mathcad Prime format?

The most convenient solution for this is to use the Mathcad Prime Conversion Utility, which is part of Mathcad Prime itself. There is no separate download available for it on PTC website, although there is a trial version of MathCAD available.

Mathcad on-line documentation actually covers the topic of migration of legacy formats in great detail in the Mathcad migration guide. In case you have issues with xmcd to mcdx conversion, it might be best to reach out to PTC community or support.

Is it possible to convert xmcd to mcdx without Mathcad Prime?

It is not. Simply because these formats are only used in Mathcad itself and are proprietary.