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An XLSX file is an Excel Spreadsheet, designed for Microsoft Office 2007 and newer. To open XLSX files with Office 2003 or earlier, you need to convert them to XLS.
Common questions about converting to XLSX
Can I convert to XLSX in bulk?
Yes, MConverter supports batch converting to XLSX. You can even drag and drop folders to convert to XLSX. Pasting files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert a file to XLSX, if its size is 1 GB?
Yes, with MConverter Premium you can convert big files, up to 1 gigabyte each. The free version lets you convert files up to 200 MB. If you need to convert files over 200 megabytes to XLSX, try MConverter Premium.
Is converting to XLSX safe with MConverter?
Yes, we encrypt your connection using industry standards. Plus, your files are only accessible by you. 24 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your files immediately after finishing the conversion by clicking the bin icon. Join others who have trusted us to convert over 2,821,411 files so far.
How long does it take to convert a file to XLSX?
For most documents, the wait may be a minute or so. However, MConverter also supports converting larger documents, meaning that it could take a while (up to over an hour, for example).
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