Convert XLS to XLSX
Online & free tool to convert XLS files to XLSX


1) Input file

Choose source file(s) to convert:

0 of 5 files added (up to 300 MB combined)

2) Output format

Select a target format to convert to:

3) Convert

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1) File URL

Choose file URL to convert:


2) Output format

Select a target format to convert to:

3) Convert

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1) Cloud Service

Choose a cloud service provider:


2) Output format

Select a target format to convert to:

3) Convert

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XLS The .xls filename extension is a native binary file format associated with the closed source spreadsheet application Microsoft Office Excel. First introduced in 1987 with the release of Excel 2.x, the file format acts as the container for storing spreadsheet data such as work sheets, charts, and macros. Prior to Microsoft Office Excel 2007, the xls binary format was the default standard for the Microsoft Office Excel until the later adoption of the Open Document standard .xlsx. Documents to be saved in the .xls format are saved as Excel 97, 2003 documents.
XLSX The .xlsx is an open source filename extension format developed by Microsoft in collaboration with ISO/IEC and ECMA. It is part of the Open Document family of file formats. The .xlsx is associated with spreadsheet authoring applications particularly with Microsoft's Office Excel 2007 and above. The format has existed since 2005 and is also supported by several other proprietary and open source spreadsheet authoring software other than Microsoft's Office Excel. The xlsx format is the default filename extension for all spreadsheet documents produced using Microsoft Office Excel 2007 SP2 and above.

How to convert XLS to XLSX

STEP 1

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.                            

STEP 2

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.

STEP 3

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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