Spreadsheet Files

Spreadsheet files store data in cells, which are organized into rows and columns. Each cell may contain a certain type of data, such as a text string, number, or date. Cells may also contain formulas, which reference other cells.

Common spreadsheet file extensions include .XLSX, .ODS, and .NUMBERS.

Extension File Type Popularity
.CTSTreeSheets Hierarchical Spreadsheet
.XLSXMicrosoft Excel Spreadsheet
.XLSMicrosoft Excel Spreadsheet (Legacy)
.XLSMMicrosoft Excel Macro-Enabled Spreadsheet
.DEFSmartWare II Data File
.123Lotus 1-2-3 Spreadsheet
.DEXMicrosoft Excel Spreadsheet
.XLMicrosoft Excel Spreadsheet
.XLRWorks Spreadsheet
.PMVXPlanMaker Spreadsheet Template
.NUMBERS-TEFNumbers iCloud Document
.SXCStarOffice Calc Spreadsheet
.NBMathematica Notebook
.XLTMMicrosoft Excel Macro-Enabled Spreadsheet Template
.XLSBMicrosoft Excel Binary Spreadsheet
.ODSOpenDocument Spreadsheet
.NUMBERSApple Numbers Spreadsheet
.GNUMERICGnumeric Spreadsheet
.MARMariner Calc Spreadsheet
.OTSOpenDocument Spreadsheet Template
.CHIPMicroarray Annotation File
.FODSOpenDocument Flat XML Spreadsheet
.PRESTOPresto Project Spreadsheet
.CELLThinkfree Office NEO Cell Workbook
.BKSMicrosoft Works Spreadsheet Backup File
.RDFReport Definition File
.XARMicrosoft Excel Auto-Recovery File
._XLSRenamed Microsoft Excel Spreadsheet (Legacy)
.TMVTimeMap Visual
.IMPImprov Spreadsheet
.EFUEverything File List
.PMDPlanMaker Spreadsheet (Legacy)
.WQ2Quattro Pro for DOS Spreadsheet File
.NMBTEMPLATENumbers Spreadsheet Template
.SDCApache OpenOffice Calc Spreadsheet
.XLTXMicrosoft Excel Spreadsheet Template
.EDXZEdraw Compressed XML FIle
.FPFileMaker Pro Spreadsheet
._XLSXRenamed Microsoft Excel Spreadsheet
.QPWQuattro Pro Spreadsheet
.GSHEETGoogle Sheets Shortcut
.OGWUOrigin Unicode Workbook File
.XLSHTMLMicrosoft Excel HTML Spreadsheet
.NCSSNCSS Dataset File
.ASTAbility Spreadsheet Template
.WKSLotus 1-2-3 Spreadsheet
.DISOracle Discoverer Workbook
.12MLotus 1-2-3 SmartMaster File
.GNMGnumeric Spreadsheet
.PMDXPlanMaker Spreadsheet
.EDXEdraw XML FIle
.XLSMHTMLMicrosoft Excel MIME HTML Spreadsheet
.ESSEasySpreadsheet Spreadsheet
.OGWOrigin Workbook File
.AWSAbility Spreadsheet File
.WKQQuattro Pro for DOS Spreadsheet File
.WQ1Quattro Pro for DOS Spreadsheet File
.WKSWorks Spreadsheet
.UOSUniform Office Spreadsheet
.FCSFirst Choice Spreadsheet
.STCStarOffice Calc Spreadsheet Template
.XLTHTMLMicrosoft Excel HTML Spreadsheet Template
.WR1Lotus Symphony Worksheet File
.HCDTThinkfree Office NEO Cell Template
.PMVPlanMaker Spreadsheet Template
.TMVTTimeMap Template
.DFGData Flask Grid File
.WKILotus 2 Worksheet
.WKULotus 1-2-3 Spreadsheet
.WLS602Tab Spreadsheet