Microsoft Works Spreadsheet

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File Format
Name Microsoft Works Spreadsheet
Ontology
Extension(s) .wks, .xlr, .bks
PRONOM fmt/166, fmt/901, others

This article describes the formats used by the spreadsheet component of the Microsoft Works office suite.

See Microsoft Works for more information and resources.

Contents

Identifiers

Format Version Ext. PRONOM
Microsoft Works Spreadsheet 1-5 .wks fmt/166
Microsoft Works Spreadsheet 6-9 .xlr fmt/901
Microsoft Works Spreadsheet for Macintosh 3 .wks fmt/270
Microsoft Works Spreadsheet for Macintosh 4 .wks fmt/271
Backup file .bks

Identification

Early versions 1-5 WKS files begin with a 00 or ff byte, followed by 00 02 00 04 04 05 54 02 00.

XLR files (from Works 6.0+) are based on Microsoft Compound File.

Screenshots

MSWorksSpreadsheet6.0-SaveAsDialog.png

Software

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox