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.WB3 File Extension

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File TypeCorel Quattro Pro 7 and 8 File

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CategoryData Files


This file is saved in a binary format, which requires a specific program to read its contents.


File created by Quattro Pro, a spreadsheet program included with Corel WordPerfect Office; contains data, charts, calculations, and scripts in a grid of spreadsheet cells; typically used for common business tasks or in personal finance.

More Information

Microsoft Excel 2003 can convert WB3 spreadsheets into .XLS and .XLSX files if the Quattro Pro file converter is installed. However, Excel 2007 and later no longer support WB3 files.

NOTE: The WB3 file extension is used by Quattro Pro 7 and 8.

Program(s) that open .WB3 files
Microsoft Windows LogoWindows
Corel Quattro Pro X7
Microsoft Excel 2016
Updated 5/16/2012