Open MPX files in your browser
The text format Microsoft Project traded plans in before XML, still written by tools that hand plans to it. Open one right here as its Gantt chart. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your plan opens as its Gantt chart: the tasks down the left with their dates, and their bars along a timeline with the links between them, milestones, baselines and the critical path in coral.
- Tasks • Fold summaries and zoom from days to years
- Resources and Calendars • A tab each
- Search • Every match counted
- Export • Save as PDF, PNG, CSV, Excel or Project XML
About MPX
Microsoft Project 4.0 brought MPX so that plans could move between Project and other planning apps, and Primavera and Sciforma took it up. Project stopped saving it with Project 2000 and stopped reading it after Project 2010, yet GanttProject and other tools still write it.
An MPX is text, a record a line, each starting with its number: the settings, the calendars and their exceptions, the resources, then each task followed by its predecessors and the resources assigned to it, its fields in the order the file names them.
Filepeek reads it in your browser with a reader of its own. The tasks open with their outline, durations, dates, % complete, predecessors and resources, and their bars run along a timeline beside them: summaries, milestones as diamonds, links with their lags and the critical path in coral, with baselines under the bars. Resources and Calendars have tabs of their own, and Export saves CSV, Excel, Project XML, or the chart as PDF or PNG.
Microsoft Project Exchange
.mpx
Format
- MIME type
- text/plain
- Made by
- Microsoft Project 4.0 to 98
Inside the file
- Holds
- Tasks, links, resources and calendars
- Format
- Text, a numbered record a line
- Written by
- Project 4.0 to 98, GanttProject and others
- Read by
- Project up to 2010
Opens in every browser
Filepeek opens MPX files in Chrome, Edge, Firefox and Safari, whatever wrote them. On their own, browsers download them, and Project 2013 and later don't open them.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open MPX
- WindowsProject up to 2010 • ProjectLibre and GanttProject open it, free
- MacProjectLibre and GanttProject open it, free
- iPhone and iPadNo app built in opens it
- AndroidNo app built in opens it
Questions
How do I open an MPX file?
Drop it on this page or press Peek an MPX. It opens as its Gantt chart in your browser, with nothing to install, where Project 2013 and later can't open it at all.
How do I get an MPX into a newer Project?
Open it here, choose Export, then Save as Project XML. Every Project from 2002 on opens that, and so do ProjectLibre and GanttProject.
How do I convert MPX to Excel?
Choose Export, then Save the tasks and resources as Excel, or Save the tasks as CSV.
Which apps write MPX?
Project 4.0 to 98 saved it, Primavera's older planners exported it, and GanttProject and libraries like MPXJ still write it to hand a plan to other tools.