Spreadsheet Files

File extension	File description	Developer/Producer
.123	Lotus 1-2-3 Spreadsheet	IBM
.ast	Ability Spreadsheet Template	Ability Plus Software
.aws	Ability Spreadsheet File	Ability Plus Software
.bks	Microsoft Works Spreadsheet Backup File	Microsoft
.def	SmartWare II Data File	SmartWare
.dex	Excel Spreadsheet	Microsoft
.dfg	Data Flask Grid File	Interscape
.dis	Oracle Discoverer Workbook	Oracle
.edx	Edraw XML FIle	EdrawSoft
.edxz	Edraw Compressed XML FIle	EdrawSoft
.ess	EasySpreadsheet Spreadsheet	N/A
.fcs	First Choice Spreadsheet	N/A
.fm	FileMaker Database	FileMaker
.fods	OpenDocument Flat XML Spreadsheet	Oracle
.fp	FileMaker Pro Spreadsheet	N/A
.gsheet	Google Drive Spreadsheet	Google
.imp	Improv Spreadsheet	Lotus
.mar	Mariner Calc Spreadsheet	Mariner Software
.nb	Mathematica Notebook	Wolfram Research
.nmbtemplate	Numbers Spreadsheet Template	Apple
.numbers	Numbers Spreadsheet File	Apple
.numbers-tef	Numbers iCloud Document	Apple
.ods	OpenDocument Spreadsheet	Oracle
.ots	OpenDocument Spreadsheet Template	OASIS
.pmd	PlanMaker Spreadsheet	SoftMaker Software
.pmv	PlanMaker Spreadsheet Template	SoftMaker Software
.qpw	Quattro Pro Spreadsheet	Corel
.rdf	Report Definition File	N/A
.sdc	Apache OpenOffice Calc Spreadsheet	Oracle
.stc	StarOffice Calc Spreadsheet Template	Oracle
.sxc	StarOffice Calc Spreadsheet	Sun Microsystems
.uos	Uniform Office Spreadsheet	N/A
.wki	Lotus 2 Worksheet	IBM
.wks	Works Spreadsheet	Microsoft
.wku	Lotus 1-2-3 Spreadsheet	IBM
.wq1	Quattro Pro for DOS Spreadsheet File	Corel
.wq2	Quattro Pro for DOS Spreadsheet File	Corel
.xar	Excel Auto-Recovery File	Microsoft
.xl	Excel Spreadsheet	Microsoft
.xlr	Works Spreadsheet	Microsoft
.xls	Excel Spreadsheet	Microsoft
.xlsb	Excel Binary Spreadsheet	Microsoft
.xlshtml	Microsoft Excel HTML Spreadsheet	Microsoft
.xlsm	Excel Open XML Macro-Enabled Spreadsheet	Microsoft
.xlsmhtml	Microsoft Excel MIME HTML Spreadsheet	Microsoft
.xlsx	Microsoft Excel Open XML Spreadsheet	Microsoft
.xlthtml	Microsoft Excel HTML Spreadsheet Template	Microsoft
.xltm	Excel Open XML Macro-Enabled Spreadsheet Template	Microsoft
.xltx	Excel Open XML Spreadsheet Template	Microsoft

.123

Lotus 1-2-3 Spreadsheet

IBM

.ast

Ability Spreadsheet Template

Ability Plus Software

.aws

Ability Spreadsheet File

Ability Plus Software

.bks

Microsoft Works Spreadsheet Backup File

Microsoft