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DOCUMENT CONVERTER

XLS to XLSX

Convert your XLS document to XLSX when you need a format supported by different office software. After conversion, review the content and layout before sending the file.

NO SIGNUP NEEDEDConvert 2 files free every dayWant more? Create a free account for 5 daily conversions.
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Drop your XLS file here

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Maximum file size: 25 MB per file
No account required · Up to 2 conversions per network per day.

How to use XLS to XLSX online

  1. Use this converter right away without an account (2 free conversions per network each day), or sign in for your personal daily allowance.
  2. Upload your file in XLS format using the uploader above.
  3. Select Convert to start the processing.
  4. Download your XLSX result when processing finishes.

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When should you use XLS to XLSX?

Use this tool when a website, app or recipient needs XLSX instead of XLS. Upload a supported file and inspect the result before sharing.

Input and output details

Supported input: XLS. Output: XLSX. This tool accepts one source file per conversion.

What to check after conversion

Custom fonts, embedded objects and complex formatting may change. Review the exported document before relying on its layout.

Understand the file formats

Input: XLS

XLS is an older Excel workbook format.

Formulas and formatting may behave differently in other spreadsheet applications.

Result: XLSX

XLSX is an Excel workbook format supporting formulas and multiple sheets.

Export to plain-text formats can discard formulas, styles and worksheets.