| .ODS |
OpenDocument Spreadsheet |
| .NUMBERS |
Apple Numbers spreadsheet |
| .XLSX |
Microsoft Excel Open XML Workbook |
| .XLSB |
Microsoft Excel Binary Workbook |
| .GSHEET |
Google Sheets Shortcut (Link to a Google Sheets spreadsheet) |
| .XLSM |
Microsoft Excel Macro-Enabled Workbook (Open XML) |
| .XLS |
Microsoft Excel 97-2003 Workbook (Binary Interchange File Format, BIFF8) |
| .ET |
Kingsoft / WPS Spreadsheet |
| .WK4 |
Lotus 1-2-3 Release 4 Worksheet |
| .SXC |
StarOffice / OpenOffice.org 1.x Calc Spreadsheet |
| .123 |
Lotus 1-2-3 Spreadsheet (Millennium / 97+) |
| .DIF |
Data Interchange Format (spreadsheet) |
| .WKS |
Microsoft Works Spreadsheet |
| .SLK |
Symbolic Link (SYLK) Spreadsheet File |
| .XL |
Microsoft Excel Spreadsheet (legacy) |
| .XLTX |
Microsoft Excel Open XML Workbook Template |
| .OTS |
OpenDocument Spreadsheet Template |
| .XLR |
Microsoft Works Spreadsheet |
| .SDC |
StarOffice Calc Spreadsheet |
| .XLT |
Microsoft Excel 97-2003 Template |
| .DIS |
Oracle Discoverer Workbook |
| .XLTM |
Microsoft Excel Macro-Enabled Workbook Template |
| .WK1 |
Lotus 1-2-3 Release 2 Worksheet |
| .STC |
StarOffice/OpenOffice.org Calc Spreadsheet Template |
| .KS |
Microsoft Works spreadsheet file |
| .WQ1 |
Corel Quattro Pro for MS-DOS spreadsheet file |
| .FCS |
Flow cytometry standard format |
| .FODS |
OpenDocument Flat XML spreadsheet file |
| .QPW |
Corel Quattro Pro spreadsheet file |
| .NAM |
DMAP spreadsheet file |
| .AWS |
Ability Spreadsheet spredsheet file |
| .NMBTEMPLATE |
Apple Numbers spreadsheet template file |
| .DFG |
Data Flask grid file |
| .KSP |
Calligra Sheets Spreadsheet |
| .PMV |
PlanMaker spreadsheet template file |
| .XMLX |
Excel Spreadsheet |
| .UOS |
Unified Office format spreadsheet file |
| .WQ2 |
Corel Quattro Pro for MS-DOS spreadsheet file |
| .JNB |
SigmaPlot Workbook |
| .SPW |
SLIM-Master Plan Workbook |
| .XLSMHTML |
Microsoft Excel MIME HTML spreadsheet file |
| .XLS_ |
Microsoft Excel For Mac Spreadsheet |
| .WK! |
Lotus 1-2-3 Spreadsheet |
| .WKU |
Lotus 1-2-3 spreadsheet file |
| .EDXZ |
Edraw Compressed XML FIle |
| .WR! |
Compressed Lotus Spreadsheet |
| .WKI |
Lotus 1-2-3 version 2 spreadsheet file |
| .ECSV |
Encapsulated Comma Separated Value |
| .NUMBERS-TEF |
Apple Numbers iCloud spreadsheet file |
| .SKY |
Microsoft Multiplan SYLK Spreadsheet |
| .XLSHTML |
Microsoft Office Excel HTML document file |
| .SILK |
Microsoft Excel Symbolic Link Format |
| .QVO |
QlikView Table |
| .WQ! |
Corel Quattro Pro Compressed Spreadsheet |
| ._XLS |
Microsoft Excel Workbook |
| .XLMX |
Microsoft Excel Macro-enabled Spreadsheet |
| .CSVX |
XML CSV |
| .WQ0 |
Corel Quattro Pro For MS-DOS Spreadsheet |
| .DWK |
DADiSP Worksheet |
| .XLXML |
Microsoft Excel XML Worksheet |
| .XLTHTML |
Microsoft Office Excel HTML template file |
| .SXLS |
Sealed Excel Spreadsheet |
| .XCEL |
Microsoft Excel For Mac Spreadsheet |
| .XSLB |
Microsoft Excel data |
| .WR1 |
Lotus Symphony Spreadsheet |
| .SXLSX |
Sealed Microsoft Excel 2007 Worksheet |
| .XLS5 |
Microsoft Excel 5 For Mac Spreadsheet |
| .LGX |
Logistix spreadsheet |
| .WB0 |
Corel Quattro Pro Spreadsheet |
| .WKQ |
Corel Quattro Pro For MS-DOS Spreadsheet |
| .WKZ |
Wingz Spreadsheet |
| .SYK |
Microsoft Excel Symbolic Link Format |
| .RS1 |
RETScreen Spreadsheet |
| .OGW |
OriginLab Worksheet |
| .FM1 |
Lotus 1-2-3 Release 2.x Spreadsheet |
| .XS4 |
XESS Worksheet |
| .XLW5 |
Microsoft Excel 5 For Mac Workbook |
| .CWSS |
ClarisWorks Spreadsheet |
| .WG1 |
Lotus 1-2-3 Worksheet |
| .SWSS |
ClarisWork Spreadsheet |
| .SLS3 |
Microsoft Excel 3 For Mac Template |
| .XLS3 |
Microsoft Excel 3 For Mac Spreadsheet |
| .AWSS |
Microsoft Works For Mac Spreadsheet |
| .XLS8 |
Microsoft Excel 98 For Mac Spreadsheet |
| .SLS5 |
Microsoft Excel 5 For Mac Template |
| .$$S |
OS/2 Spreadsheet |
| .XS5 |
XESS Worksheet |
| .WG2 |
Lotus 1-2-3 For OS/2 Worksheet |
| .XLW_ |
Microsoft Excel 2 For Mac Workbook |
| .XLW3 |
Microsoft Excel 3 For Mac Workbook |
| .XLW4 |
Microsoft Excel 4 For Mac Workbook |
| .SLS4 |
Microsoft Excel 4 For Mac Template |
| .XLS4 |
Microsoft Excel 4 For Mac Spreadsheet |
| .SLS8 |
Microsoft Excel 98 For Mac Template |
| .SIAG |
SIAG spreadsheet |
| .WJ3 |
Lotus 1-2-3 worksheet |
| .PMBAK |
PlanMaker backup |
| .XLSXE |
Document Manager encrypted Excel spreadsheet |
| .FJ3 |
Lotus 1-2-3 worksheet |
| .PMDX |
PlanMaker spreadsheet |
