XLS to XLSX Converter

Convert xls to xlsx secure, online & free


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Important: 150 MB maximum file size, all upload and processed files will be deleted automatically within 1 hours.
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What is XLS Format?

Excel Spreadsheet Convert to XLS

An XLS file is a spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. This contains one or more worksheets, which store and display the data as a table. They can also store mathematical functions, graphics, styles and formats.

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What is XLSX Format?

Microsoft Excel Open XML Spreadsheet XLSX Converter

An XLSX file is a spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. Data are stored in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain tables, mathematical functions, styles and formatting. XLSX files are commonly used to store financial data and backup simple or complex mathematical models.

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How to convert XLS to XLSX?

Convert XLS to XLSX with Docpose.com for free online. With our easy to use XLS files converter, you can quickly convert your XLS files into the XLSX format. All you need is a web browser and an internet connection - no software download or installation required! Simply upload your XLS file and select XLSX as the output format, then click convert - it's that easy! Plus, our service is completely free to use - there are no hidden charges or catches. So why not give it a try today?

Step 1
Upload xls-file(s)
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Step 2
Choose "xlsx"
Choose xlsx or any other format you need as a result (more than 108 formats supported).
Step 3
Download your xlsx
Let the file convert and download xlsx.
** You can also open xlsx file in our free online viewer by clicking "Open".


FAQ

  • 1 ❓ How can I Convert XLS to XLSX?

    First, you need to add a file for conversion: drag & drop your XLS file or click inside the white area for choose a file. Then click the "Convert XLS Now" button. It will now allow you to convert your XLS file to XLSX file.

  • 2 ⏱️ How long does it take to convert XLS to XLSX?

    This converter works fast. You can convert XLS to XLSX in a few seconds.

  • 3 🛡️ Is it safe to convert XLS to XLSX using free file converter?

    Of course! The download link of XLSX files will be available instantly after conversion. We delete uploaded files after 24 hours and the download links will stop working after this time period. No one has access to your files. File converter (including excel spreadsheet .xls) is absolutely safe.

  • 4 💻 Can I Convert XLS on Mac OS, Android or Linux?

    Yes, you can use free converter app on any operating system that has a web browser. Our XLS to XLSX converter works online and does not require any software installation.

  • 5 🌐 What browser should I use to convert XLS to XLSX?

    You can use any modern browser to convert XLS, for example, Google Chrome, Firefox, Opera, Safari.

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