List of Spreadsheet file extensions

There are many different spreadsheet file extensions and spreadsheet file types used with computers, and you'll find an entire list of spreadsheet file extensions and types on our computer files and file extensions page. It is impossible to remember all file extensions and their associated software programs. Below is the list of spreadsheet file extensions, broken into categories by sort of files along with the developer and available 100% free online spreadsheet file tools and apps.

Extension File Type Developer Free Apps
._XLS Renamed Microsoft Excel Spreadsheet Microsoft Free _XLS Apps
._XLSX Renamed Microsoft Excel Open XML Spreadsheet Microsoft Free _XLSX Apps
.123 Lotus 1-2-3 Spreadsheet IBM Free 123 Apps
.12M Lotus 1-2-3 SmartMaster File IBM Free 12M Apps
.AST Ability Spreadsheet Template Ability Plus Software Free AST Apps
.AWS Ability Spreadsheet File Ability Plus Software Free AWS Apps
.BKS Microsoft Works Spreadsheet Backup File Microsoft Free BKS Apps
.CELL Thinkfree Office NEO Cell Workbook Hancom Free CELL Apps
.DEF SmartWare II Data File SmartWare Free DEF Apps
.DEX Excel Spreadsheet Microsoft Free DEX Apps
.DFG Data Flask Grid File Interscape Free DFG Apps
.DIS Oracle Discoverer Workbook Oracle Free DIS Apps
.EDX Edraw XML FIle EdrawSoft Free EDX Apps
.EDXZ Edraw Compressed XML FIle EdrawSoft Free EDXZ Apps
.ESS EasySpreadsheet Spreadsheet Not Available Free ESS Apps
.FCS First Choice Spreadsheet Not Available Free FCS Apps
.FM FileMaker Database FileMaker Free FM Apps
.FODS OpenDocument Flat XML Spreadsheet Oracle Free FODS Apps
.FP FileMaker Pro Spreadsheet Not Available Free FP Apps
.GNM Gnumeric Spreadsheet The GNOME Project Free GNM Apps
.GNUMERIC Gnumeric Spreadsheet The GNOME Project Free GNUMERIC Apps
.GSHEET Google Drive Spreadsheet Link File Google Free GSHEET Apps
.HCDT Thinkfree Office NEO Cell Template Hancom Free HCDT Apps
.IMP Improv Spreadsheet Lotus Free IMP Apps
.MAR Mariner Calc Spreadsheet Mariner Software Free MAR Apps
.NB Mathematica Notebook Wolfram Research Free NB Apps
.NCSS NCSS Dataset File NCSS Free NCSS Apps
.NMBTEMPLATE Numbers Spreadsheet Template Apple Free NMBTEMPLATE Apps
.NUMBERS Numbers Spreadsheet File Apple Free NUMBERS Apps
.NUMBERS-TEF Numbers iCloud Document Apple Free NUMBERS-TEF Apps
.ODS OpenDocument Spreadsheet Oracle Free ODS Apps
.OGW Origin Workbook File OriginLab Free OGW Apps
.OGWU Origin Unicode Workbook File OriginLab Free OGWU Apps
.OTS OpenDocument Spreadsheet Template Apache Software Foundation Free OTS Apps
.PMD PlanMaker Spreadsheet SoftMaker Software Free PMD Apps
.PMDX PlanMaker Spreadsheet SoftMaker Software Free PMDX Apps
.PMV PlanMaker Spreadsheet Template SoftMaker Software Free PMV Apps
.PMVX PlanMaker Spreadsheet Template SoftMaker Software Free PMVX Apps
.QPW Quattro Pro Spreadsheet Corel Free QPW Apps
.RDF Report Definition File Not Available Free RDF Apps
.SDC Apache OpenOffice Calc Spreadsheet Apache Software Foundation Free SDC Apps
.STC StarOffice Calc Spreadsheet Template Oracle Free STC Apps
.SXC StarOffice Calc Spreadsheet Sun Microsystems Free SXC Apps
.TMV TimeMap Visual LexisNexis Free TMV Apps
.TMVT TimeMap Template LexisNexis Free TMVT Apps
.UOS Uniform Office Spreadsheet Not Available Free UOS Apps
.WKI Lotus 2 Worksheet IBM Free WKI Apps
.WKQ Quattro Pro for DOS Spreadsheet File Corel Free WKQ Apps
.WKS Lotus 1-2-3 Spreadsheet IBM Free WKS Apps
.WKS Works Spreadsheet Microsoft Free WKS Apps
.WKU Lotus 1-2-3 Spreadsheet IBM Free WKU Apps
.WQ1 Quattro Pro for DOS Spreadsheet File Corel Free WQ1 Apps
.WQ2 Quattro Pro for DOS Spreadsheet File Corel Free WQ2 Apps
.WR1 Lotus Symphony Worksheet File IBM Free WR1 Apps
.XAR Excel Auto-Recovery File Microsoft Free XAR Apps
.XL Excel Spreadsheet Microsoft Free XL Apps
.XLSB Excel Binary Spreadsheet Microsoft Free XLSB Apps
.XLSHTML Microsoft Excel HTML Spreadsheet Microsoft Free XLSHTML Apps
.XLSM Excel Open XML Macro-Enabled Spreadsheet Microsoft Free XLSM Apps
.XLSMHTML Microsoft Excel MIME HTML Spreadsheet Microsoft Free XLSMHTML Apps
.XLTHTML Microsoft Excel HTML Spreadsheet Template Microsoft Free XLTHTML Apps
.XLTM Excel Open XML Macro-Enabled Spreadsheet Template Microsoft Free XLTM Apps
.XLTX Excel Open XML Spreadsheet Template Microsoft Free XLTX Apps
Extension File Type Developer Free Apps