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Select the document file in the XLS format to convert to the XLSX format, you can select a file from your computer or your Google Drive or Dropbox account.
Choose the XLSX format from the drop-down list as the output format, and click the Convert button, you can convert up to 5 files at the same time and a maximum size of up to 300 MB.
Wait until your file is uploaded and converted into the XLSX document format, you can download the converted file up to a maximum of 5 times, and can also delete the file from the Download page.
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