XLS to XLSX converter

This online document converter lets you convert your files from XLS to XLSX in high quality.

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Scanned pages will be images.
Convert with OCR

Scanned pages will be converted to text you can edit.


For best results, select all languages used in your file.

Convert XLS to XLSX

We support many file formats like PDF, DOCX, PPTX, XLSX and more. With online-convert.com conversion technology, you get accurate results.

How to convert a XLS file to a XLSX file

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

To convert in the opposite direction, click here to convert from XLSX to XLS:

XLSX to XLS converter