Files with mpx extension can be mainly found as export files from some earlier version of Microsoft Project software. Used for exchange and sharing purposes.

There are 3 other file types using
the MPX file extension!

mpx icon.mpx - FoxPro compiler menu

empty icon.mpx - Alpha Five temporary index data

empty icon.mpx - BX-24 Basic Express compiler map

Detailed description

Software that open mpx file

Add comment

Bookmark & share this page with others:

MPX file extension - Microsoft Project export

What is mpx file? How to open mpx files?

File type specification:

Document file type icon Document file type

mpx file icon: mpx filetype icon

File extension mpx is mostly known to be related to Microsoft Project project management software. The mpx files are in ASCII format and were used Microsoft Project 4.0, Microsoft Project 4.1, and Microsoft Project 98.

This format was dropped in MS Project 2000 in favor of modern formats.

MIME types:

This mpx file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Updated: July 14, 2022

The default software associated to open mpx file:

Microsoft Project icon

Microsoft Corporation logoMicrosoft Project  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Project is a project management software program, developed and sold by Microsoft. The program is used to assist a project manager in developing a plan, assigning resources to tasks, tracking progress, managing the budget, and analyzing workloads.

Microsoft Project is distributed as stand alone applications or with some distributions of Microsoft Office suite. Project is distributed in two editions Standard and Professional.

Help how to open:

These files were used in old versions of Microsoft Project, but even some later versions should still support MPX format.

How to convert:

It may still be possible to import .mpx files to latest Microsoft Project and produce a new project file based on the data from the original.

Find conversions from mpx file:

mpx to mpp

Find converter to mpx file type:

mpp to mpx

List of software applications associated to the .mpx file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open mpx file, edit mpx file, convert mpx file, view mpx file, play mpx file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting mpx files.

Software that open mpx file - Microsoft Project export

Programs supporting the exension mpx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open mpx file action.

Microsoft Windows:

Main software associated with mpx file by default:
Microsoft Project small icon Microsoft Project
Other suggested software:
MOOS Project Viewer

Previous file extension
MPWD file extension > Document file types

Next file extension
file extension MS


Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed