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What is a .mpp file?
A .mpp file is a Microsoft Project (version 4.0). This one is a specialist format without an obvious everyday home. Confusingly, this extension has been used by 9 different formats over the years — they're all listed below.
This extension has been used by more than one format
9 different formats have claimed .mpp over the years, so two files with the same extension aren't necessarily the same kind of thing.
- Microsoft ProjectVersion 4.0 · x-fmt/243
- Microsoft ProjectVersion 95 · x-fmt/244
- Microsoft ProjectVersion 98 · x-fmt/245
- Microsoft ProjectVersion 2000-2003 · x-fmt/247
- Microsoft ProjectVersion 2007 · fmt/440
- Microsoft ProjectVersion 2010 · fmt/725
- Multi Palette Picture FileNo version recorded · fmt/1471
- Microsoft ProjectVersion 1 · fmt/2027
- Microsoft ProjectVersion 3 · fmt/2028
How to open a .mpp file
- The program that created it is by far the most reliable way to open it.
- On Windows, use a hex viewer or the free TrID tool to identify what the file really is.
- On Mac or Linux, running `file yourfile` in the terminal identifies most formats instantly.
The registry records this extension against Microsoft Project, Microsoft Project, Microsoft Project and others, so software from that family is the most likely match.
How to convert a .mpp file
- Identify the file first, then look for an export or Save As option in whatever program can read it.
MIME type
When a .mpp file travels over the web, servers label it with this MIME type:
application/vnd.ms-projectThe technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .mpp.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Microsoft Project | 4.0 | application/vnd.ms-project | x-fmt/243 |
| Microsoft Project | 95 | application/vnd.ms-project | x-fmt/244 |
| Microsoft Project | 98 | application/vnd.ms-project | x-fmt/245 |
| Microsoft Project | 2000-2003 | application/vnd.ms-project | x-fmt/247 |
| Microsoft Project | 2007 | application/vnd.ms-project | fmt/440 |
| Microsoft Project | 2010 | application/vnd.ms-project | fmt/725 |
| Multi Palette Picture File | — | — | fmt/1471 |
| Microsoft Project | 1 | application/vnd.ms-project | fmt/2027 |
| Microsoft Project | 3 | — | fmt/2028 |