List of Microsoft Office File Extensions


File Formats in Microsoft Word

Extention File Name
.doc Word 97-2003 Document
.docx Strict Open XML Document
.htm, .html Web Page
.mht; .mhtml Single File Web Page
.docx Microsoft Word Open XML document file
.odt OpenDocument Text
.pdf PDF
.rtf Rich Text Format
.txt Plain Text
.dotm Microsoft Word Open XML macro-enabled document template file
.wps Works 6-9 Document
.xml Word XML Document
.xps XPS Document


File Formats in Microsoft Excel

.csv CSV (Comma delimited), CSV (Macintosh), CSV (MS-DOS)
.dbf DBF 3, DBF 4
.prn Formatted Text (Space delimited)
.htm, .html Web Page, Web Page, Filtered
.mht; .mhtml Single File Web Page
.ods OpenDocument Spreadsheet
.slk Microsoft Symbolic Link format file
.prn Formatted Text (Space delimited)
.txt Text (Tab delimited), Text (Tab delimited), Text (MS-DOS),Unicode Text
.xla Microsoft Excel add-in file
.xlam Microsoft Excel Open XML macro-enabled add-in file
.xls Microsoft Excel 97 to 2003 workbook file
.xlsx Excel Workbook, Strict Open XML Spreadsheet
.xlsb Microsoft Excel binary workbook file
.xlt Microsoft Excel 97 to 2003 workbook template file
.xltx Microsoft Excel 2007/2010 Open XML workbook template file
.xltm Microsoft Excel 2007/2010 Open XML macro-enabled workbook template file
.xlw Microsoft Excel workspace file
.xml XML Spreadsheet 2003, XML Data


File Formats in MS PowerPoint

.bmp Device Independent Bitmap
.emf Enhanced Windows Meta file
.gif GIF Graphics Interchange Format
.jpg JPEG File Interchange Format
.mp4 MPEG-4 Video
.odp Open Document Presentation
.pdf Portable Document Format
.png PNG Portable Network Graphics Format
.potx Microsoft PowerPoint Open XML presentation template file
.pot Microsoft PowerPoint 97 to 2003 template file
.ppa Microsoft PowerPoint 97 to 2003 add-in file
.ppam Microsoft PowerPoint macro-enabled Open XML add-in file
.ppsx Microsoft PowerPoint 2007/2010 Open XML complete slide show file
.ppsm Microsoft PowerPoint macro-enabled Open XML complete slide show file
.pps Microsoft PowerPoint 97 to 2003 complete slide show file
.pptm Microsoft PowerPoint macro-enabled Open XML presentation file
.ppt Microsoft PowerPoint 97 to 2003 presentation file
.pptx PowerPoint Presentation
.rtf Outline/RTF
.thmx Microsoft Office 2007/2010 theme file
.tif TIFF Tag Image File Format
.wmf Windows Metafile
.wmv Windows Media Video
.xml PowerPoint XML Presentation
.xps XPS Document
.potm Microsoft PowerPoint 2007/2010 macro-enabled Open XML template file

Unsupported File Formats in Microsoft Excel
.xlc – Excel Chart (Excel 2.0, 3.0, and 2.x file formats)
.wb1, .wb3 – Quattro Pro 5.0 and 7.0 for Windows
.wk1, .wk2, .wk3, .wk4, .wks – Lotus 1-2-3 file formats (all versions)
.wks – Microsoft Works (all versions)
.dbf – DBASE II file format
.wq1 – Quattro Pro for MS-DOS file format
.wb1, .wb3 – Quattro Pro 5.0 and 7.0 for Windows


Unsupported File Formats in Microsoft PowerPoint
Opening or saving to PowerPoint 95 (or earlier) file formats
Web Page (.htm, .html) files
Pack and Go Wizard (.ppz) files.


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