XLS to XLSX Converter

Convert XLS to XLSX online quickly and easily. Just upload your file, convert it, and download the XLSX in seconds.

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What is XLS ?

XLS is a file format used by Microsoft Excel to store spreadsheet data. It allows users to organize, analyze, and visualize data in tabular form, making it a versatile tool for various data management tasks.

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What is XLSX ?

The XLSX file format is a spreadsheet file format created by Microsoft Excel, which is part of the Microsoft Office suite. It is based on the Open XML format and is widely used for storing and managing data in tabular form, allowing users to perform calculations, create charts, and analyze information efficiently.

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How to Convert XLS to XLSX in Just a Few Steps

  1. Upload your XLS file
    Click the upload button or drag & drop your file into the converter area. We support all major formats.
  2. Choose XLSX as the output format
    The tool will automatically convert your file to XLSX.
  3. Start the conversion
    Click the "Convert" button and let our tool handle everything. The conversion only takes a few seconds.
  4. Download your converted file
    Once complete, download your new XLSX file instantly.

Why Convert XLS to XLSX file?

Converting XLS files to the more modern XLSX format offers several compelling benefits that can significantly enhance your data management experience. One of the primary advantages is the increased file size limit that comes with XLSX. While XLS files are restricted to 65,536 rows and 256 columns, XLSX files can accommodate a staggering 1,048,576 rows and 16,384 columns. This expanded capacity makes it easier to work with large datasets, especially for businesses and analysts who rely on extensive data for reporting and decision-making.

Another major benefit of converting to XLSX is improved data recovery options. The XLSX format is based on XML, which means that if a file becomes corrupted, it is often easier to recover specific components of the data. Additionally, XLSX files are generally more efficient, as they take up less disk space and load faster than their XLS counterparts. This efficiency not only streamlines the user experience but also facilitates smoother collaboration among team members, making it ideal for organizations that frequently share and edit spreadsheets. Ultimately, switching to XLSX can lead to enhanced productivity and better overall data management.

Start converting XLS to XLSX now — it’s fast, safe, and completely online!