Convert XLS to XLSX

Online document converter

Convert your file from Microsoft Excel Spreadsheet to Microsoft Excel Open XML Spreadsheet with this XLS to XLSX converter.

xlsx converter

xlsx converter
  1. (e.g. https://example-files.online-convert.com/spreadsheet/xls/example.xls)
  2. Choose from Google Drive
  1. Optional settings
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Try the XLSX conversion with a XLS test file

Not convinced? Click on the following link to convert our demo file from XLS to XLSX:
XLS to XLSX conversion with our XLS example file.

XLS, Microsoft Excel Spreadsheet (.xls)

XLS is the file format extension for Microsoft Excel files. The XLS extension was used until the 2007 version of Excel and was replaced by an Open Office XML file format (XML Spreadsheet, or XMLSS). Excel 2007 is backwards compatible and reads many file formats from DOS-based programs. Excel is often used by third-party applications (like browsers) to avoid implementing the use of binary file...
What is XLS

XLSX, Microsoft Excel Open XML Spreadsheet (.xlsx)

XLSX files are produced by the applications of Microsoft's 2007 Office suite, namely by the product called Microsoft Excel, a spreadsheet processing software that is known all around the globe. As a very efficient tool, Excel can format and create spreadsheets and graphs, as well as processing complex mathematics queries among others. Diverse spreadsheets with various data sources, formulas,...
What is XLSX

How to convert a XLS to a XLSX file?

  1. Choose the XLS file you want to convert
  2. Change quality or size (optional)
  3. Click on "Start conversion" to convert your file from XLS to XLSX
  4. Download your XLSX file
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Convert your XLS file to another file format