Convert XLS to XLSX
Free, fast and private. Drop your XLS file and download it as XLSX in seconds.
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⚡ 1 file converted
Private by design
Files are deleted the moment your conversion finishes. We never look at them.
500+ conversions
MP4, MP3, HEIC, JPG, PDF, DOCX, XLSX, EPUB and many more.
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Just drop a file and download the result. Nothing to install.
XLS to XLSX: questions
How do I convert XLS to XLSX?
Drop your XLS file on this page (or click to choose it), make sure XLSX is selected, and press Convert. Your XLSX file is ready to download in seconds.
Is the XLS to XLSX converter free?
Yes. zapvert is free with no sign-up and no watermark, for files up to 100 MB.
Are my files safe?
Files are processed only to run your conversion and deleted from our server immediately afterwards. We never look at, keep or share them.
What is a XLS file?
XLS is the legacy Microsoft Excel spreadsheet format used before Excel 2007.
What is a XLSX file?
XLSX is the modern Microsoft Excel spreadsheet format, also opened by Google Sheets.