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 Free Apps
._XLS Renamed Microsoft Excel Spreadsheet Free _XLS Apps
._XLSX Renamed Microsoft Excel Open XML Spreadsheet Free _XLSX Apps
.123 Lotus 1-2-3 Spreadsheet Free 123 Apps
.12M Lotus 1-2-3 SmartMaster File Free 12M Apps
.AST Ability Spreadsheet Template Free AST Apps
.AWS Ability Spreadsheet File Free AWS Apps
.BKS Microsoft Works Spreadsheet Backup File Free BKS Apps
.CELL Thinkfree Office NEO Cell Workbook Free CELL Apps
.DEF SmartWare II Data File Free DEF Apps
.DEX Excel Spreadsheet Free DEX Apps
.DFG Data Flask Grid File Free DFG Apps
.DIS Oracle Discoverer Workbook Free DIS Apps
.EDX Edraw XML FIle Free EDX Apps
.EDXZ Edraw Compressed XML FIle Free EDXZ Apps
.ESS EasySpreadsheet Spreadsheet Free ESS Apps
.FCS First Choice Spreadsheet Free FCS Apps
.FM FileMaker Database Free FM Apps
.FODS OpenDocument Flat XML Spreadsheet Free FODS Apps
.FP FileMaker Pro Spreadsheet Free FP Apps
.GNM Gnumeric Spreadsheet Free GNM Apps
.GNUMERIC Gnumeric Spreadsheet Free GNUMERIC Apps
.GSHEET Google Drive Spreadsheet Link File Free GSHEET Apps
.HCDT Thinkfree Office NEO Cell Template Free HCDT Apps
.IMP Improv Spreadsheet Free IMP Apps
.MAR Mariner Calc Spreadsheet Free MAR Apps
.NB Mathematica Notebook Free NB Apps
.NCSS NCSS Dataset File Free NCSS Apps
.NMBTEMPLATE Numbers Spreadsheet Template Free NMBTEMPLATE Apps
.NUMBERS Numbers Spreadsheet File Free NUMBERS Apps
.NUMBERS-TEF Numbers iCloud Document Free NUMBERS-TEF Apps
.ODS OpenDocument Spreadsheet Free ODS Apps
.OGW Origin Workbook File Free OGW Apps
.OGWU Origin Unicode Workbook File Free OGWU Apps
.OTS OpenDocument Spreadsheet Template Free OTS Apps
.PMD PlanMaker Spreadsheet Free PMD Apps
.PMDX PlanMaker Spreadsheet Free PMDX Apps
.PMV PlanMaker Spreadsheet Template Free PMV Apps
.PMVX PlanMaker Spreadsheet Template Free PMVX Apps
.QPW Quattro Pro Spreadsheet Free QPW Apps
.RDF Report Definition File Free RDF Apps
.SDC Apache OpenOffice Calc Spreadsheet Free SDC Apps
.STC StarOffice Calc Spreadsheet Template Free STC Apps
.SXC StarOffice Calc Spreadsheet Free SXC Apps
.TMV TimeMap Visual Free TMV Apps
.TMVT TimeMap Template Free TMVT Apps
.UOS Uniform Office Spreadsheet Free UOS Apps
.WKI Lotus 2 Worksheet Free WKI Apps
.WKQ Quattro Pro for DOS Spreadsheet File Free WKQ Apps
.WKS Lotus 1-2-3 Spreadsheet Free WKS Apps
.WKS Works Spreadsheet Free WKS Apps
.WKU Lotus 1-2-3 Spreadsheet Free WKU Apps
.WQ1 Quattro Pro for DOS Spreadsheet File Free WQ1 Apps
.WQ2 Quattro Pro for DOS Spreadsheet File Free WQ2 Apps
.WR1 Lotus Symphony Worksheet File Free WR1 Apps
.XAR Excel Auto-Recovery File Free XAR Apps
.XL Excel Spreadsheet Free XL Apps
.XLSB Excel Binary Spreadsheet Free XLSB Apps
.XLSHTML Microsoft Excel HTML Spreadsheet Free XLSHTML Apps
.XLSM Excel Open XML Macro-Enabled Spreadsheet Free XLSM Apps
.XLSMHTML Microsoft Excel MIME HTML Spreadsheet Free XLSMHTML Apps
.XLTHTML Microsoft Excel HTML Spreadsheet Template Free XLTHTML Apps
.XLTM Excel Open XML Macro-Enabled Spreadsheet Template Free XLTM Apps
.XLTX Excel Open XML Spreadsheet Template Free XLTX Apps
Extension File Type Free Apps