Convert EXCEL to ODT online for free
1: Choose multiple local EXCEL files or enter the URL of an online EXCEL file. 2: Choose "ODT" as target format and set options. 3: Click the "START CONVERSION" button to convert EXCEL files to ODT online.
Set conversion options (optional)
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File extension: .xls
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".
File extension: .odt, .fodt
The Open Document Format for Office Applications (ODF), also known as OpenDocument, is an XML-based file format for spreadsheets, charts, presentations and word processing documents. It was developed with the aim of providing an open, XML-based file format specification for office applications.