XLS to XLSX Converter

ConvertFly is an online file converter. We support nearly all audio, video, document, ebook, archive, image, spreadsheet, and presentation formats. To get started, use the button below and select files to convert from your computer.

convert
XLS
to
XLSX

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PDF, DOCX, JPG, PNG, MP4, MP3, and 200+ formats

XLS

XLS Converter

XLS is Excel's legacy binary format used before 2007.

XLSX

XLSX Converter

XLSX is Excel's modern spreadsheet format based on XML.

CONVERT FROM XLS

XLS to PDFXLS to XLSXXLS to ODSXLS to CSVXLS to TSVXLS to HTML

CONVERT TO XLSX

XLSM to XLSXXLTX to XLSXXLT to XLSXXLR to XLSXODS to XLSXCSV to XLSXTSV to XLSXNUMBERS to XLSX

XLS to XLSX Converter - Free Online

Convert XLS to XLSX online for free. Fast, secure spreadsheet conversion powered by industry-standard engines. No signup required, files auto-delete after 24 hours. Swiss-hosted by Dizzus GmbH.

Related conversions

XLS to PDFXLS to ODSXLS to CSVXLS to TSVXLS to HTML
XLS to XLSX Converter - Free Online | ConvertFly