Batch convert from XLSX to other formats.
Large XLSX files are supported.

Max size: 200 MB per file

You can convert XLSX Learn more about XLSX files to


What is XLSX?

Extension xlsx
Category Document/Office file formats
Developed by Microsoft
Mime type application/vnd.openxmlformats-officedocument.spreadsheetml.sheet


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 XLSX conversions

How to open an XLSX file?

If you don't know how to view an XLSX file, you can convert it to another format you already recognize. You can use MConverter for the conversion.

Can I convert XLSX files in bulk?

Yes, MConverter supports batch converting of multiple XLSX files at once. You can even drag and drop folders containing XLSX's.
Pasting XLSX files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert an XLSX file, if its size is 1 GB?

Yes, with MConverter Premium you can convert big XLSX's, up to 1 gigabyte each.
The free version lets you convert files up to 200 MB. If you need to convert XLSX files over 200 megabytes, try MConverter Premium.

Is converting XLSX's safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your XLSX 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 XLSX's and other converted files immediately after finishing the conversion by clicking the bin icon.
Join others who have trusted us to convert over 2,639,389 files so far.

How long does it take to convert 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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