Browse file extensions by file type category:
Microsoft Office file type extensions
(98 file extension database entries)
List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps
Microsoft Office file extension list
List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps.
This category of file extensions contains file types from the Microsoft Office productivity suite and its individual programs. The latest edition, Office 2016, is available for Windows and OS X in several editions that offer various combinations of productivity software and also as a subscription based platform - Office 365. The latest editions of Office offers the following programs:
- Word (all editions)
- Excel (all editions)
- PowerPoint (all editions)
- OneNote (all editions)
- Outlook (Home and Business and higher)
- Publisher (Professional and higher; Windows only)
- Access (Professional and higher; Windows only)
- Skype for Business (Professional Plus and higher; Windows only)
- Additionally, there are two programs from the Office suite that are not part of any of the suites at this time, namely Visio and Project. These two can be only obtained as part of Office 365 subscription.
Over the years, users became familiar with most of the common Microsoft Office file extensions, with .doc, .xls, and .ppt files being probably the three most known. With the release of Office 2007, Microsoft was trying to leave those well-known extensions in the past and replace them with the new XML-based formats that have a 4-letter file extensions, with "x" being appended to the original extension, so for example .doc became .docx, .xls -> .xlsx, .ppt -> .pptx etc. The key difference is that the original files were saved in binary form and the new ones are XML-based. These new formats are still being used in the latest 2016 edition of Microsoft Office, but the older formats are still supported and can be opened in their respective programs.
Another change introduced in the 2007 Office release was that there are different extensions for files that have macros enabled and those that do not. Macro-enabled documents include a file name extension that ends with the letter "m" instead of an "x". For example a macro-enabled Word 2007 document has the .docm extension and thereby allows any user or software to recognize documents that allow additional code (macro).
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![]() | Microsoft Word Open XML document |
![]() | Microsoft Excel Open XML workbook and spreadsheet |
file extension vsdx | Microsoft Visio drawing |
![]() | Microsoft OneNote document |
file extension rpmsg | Microsoft Restricted Permission Message |
![]() | Microsoft Organization Chart chart data |
![]() | Microsoft Word document (prior version 2007) |
![]() | Microsoft Publisher document |
Microsoft Access main database | |
![]() | Microsoft Word auto-save document |
![]() | Microsoft Excel 97 to 2003 workbook |
Microsoft Access database | |
![]() | Microsoft Project plan file |
![]() | Microsoft PowerPoint Open XML presentation |
![]() | Microsoft Office personalized settings |
file extension oft | Microsoft Outlook template |
![]() | Microsoft PowerPoint 97 to 2003 presentation |
![]() | Microsoft Visio diagram document |
![]() | Microsoft Excel binary workbook |
![]() | Microsoft Outlook personal storage table |
![]() | Microsoft PowerPoint Open XML complete slide show |
Microsoft Access compiled execute only database | |
Microsoft Access report shapshot | |
Microsoft Office InfoPath template form | |
file extension crtx | Microsoft Office chart template |
Microsoft Project database | |
Microsoft Access database lock file | |
![]() | Microsoft Excel spreadsheet |
Microsoft Access compiled database (application) | |
![]() | Microsoft Excel add-in |
![]() | Microsoft Office theme |
![]() | Microsoft Excel Open XML macro-enabled workbook |
file extension onepkg | Microsoft OneNote package |
![]() | Microsoft Excel toolbars settings |
![]() | Microsoft Word document template (up to Microsoft Word 2003 version) |
![]() | Microsoft Word XML document template |
file extension ost | Microsoft Outlook inbox off-line folder |
![]() | Microsoft Word document autosave file |
![]() | Microsoft PowerPoint macro-enabled Open XML complete slide show |
![]() | Outlook for Mac e-mail database |
![]() | Microsoft PowerPoint 97 to 2003 complete slide show |
![]() | Microsoft Excel Open XML macro-enabled add-in |
Microsoft Access table shortcut | |
![]() | Microsoft Word document saved backup |
![]() | Microsoft Office automatic correction list |
file extension obi | RSS subscription file from Microsoft Outlook 2007 and above versions |
file extension iaf | Microsoft Outlook exported account and email setting |
![]() | Microsoft Visio smartshapes data |
![]() | Microsoft PowerPoint macro-enabled Open XML presentation |
file extension ops | Microsoft Office profile settings |
Microsoft Access database template | |
Microsoft Access runtime mode database | |
![]() | Microsoft Word Open XML macro-enabled document |
![]() | Microsoft PowerPoint Open XML slide file |
![]() | Microsoft Excel 97 to 2003 workbook template |
![]() | Microsoft Excel AutoRecover backup |
Microsoft Symbolic Link format | |
![]() | Microsoft PowerPoint 97 to 2003 template |
![]() | Microsoft Project template |
![]() | Microsoft Excel macro |
file extension oab | Microsoft Outlook offline address book |
![]() | Microsoft Excel Open XML workbook template |
![]() | Microsoft PowerPoint Open XML presentation template |
Microsoft Access compiled project | |
![]() | Microsoft Excel add-in |
![]() | Microsoft Excel workspace |
![]() | Microsoft PowerPoint macro-enabled Open XML add-in |
Microsoft Access report shortcut | |
![]() | Microsoft SharePoint WorkSpace Groove data |
Microsoft Access database template | |
![]() | Microsoft PowerPoint 97 to 2003 add-in |
![]() | Microsoft Word Open XML macro-enabled document template |
Microsoft Access add-in | |
Microsoft Access workgroup information | |
Microsoft Office InfoPath form definition | |
![]() | Microsoft PowerPoint macro-enabled Open XML slide |
Microsoft Access add-in | |
![]() | Microsoft Visio flowchart |
![]() | Microsoft Excel Open XML macro-enabled workbook template |
Microsoft Access digitally signed database | |
![]() | Microsoft Excel chart |
Microsoft Access macro shortcut | |
![]() | Microsoft Publisher packed document |
![]() | Microsoft Visio XML drawing |
Microsoft Access form shortcut | |
Microsoft Access project | |
file extension xslb | Microsoft Excel data |
![]() | Microsoft Word add-in |
![]() | Microsoft PowerPoint add-in |
file extension prf | Microsoft Outlook profile |
![]() | Microsoft Visio stencil XML document |
Microsoft Access query shortcut | |
![]() | Microsoft PowerPoint macro-enabled Open XML template |
Microsoft Access database wizard | |
file extension cnv | Microsoft Word text conversion data |
file extension h1q | Microsoft Help merged query index |
Microsoft Access data access page | |
![]() | Microsoft Visio XML template |