Convert XLS Online

 

XLS - Microsoft Excel Binary File Format

 

Format introduction:

Microsoft Excel up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet".

Technical details:

OpenOffice.org has created documentation of the Excel format. Since then Microsoft made the Excel binary format specification available to freely download.

 

File extension	.xls
MIME	application/vnd.ms-excel
Developed by	Microsoft
Type of format	Spreadsheet
Associated programs	Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
Sample file	sample.xls
Wikipedia	XLS on Wikipedia