Online XLSX to CSV converter

Convert spreadsheet files

50+ most popular formats supported

Maximum file size 5 MB or sign up

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    XLSX

    Convert XLSX spreadsheets into CSV files online. Simply drag and drop or upload your XLSX spreadsheet and get the converted CSV file in seconds. Don't worry about the privacy of your data — all files you upload are reliably encrypted. Create a free account and store all your CSV files and other content, such as office documents, PDFs, audio and video files, and e-books in one place. Share your CSV files with other people in public rooms and create collaboration rooms for real-time co-authoring.

    50+ supported formats

    Spreadsheets

      Text documents

        Presentations

          Powerful conversion API

          ONLYOFFICE provides one API to convert all kinds of Office documents: texts, sheets, slides, forms, PDFs, eBooks and more within your app. Check our API documentation.

          We care about your data

          All documents you upload are encrypted to make sure they are completely safe online.
          We do not track or request any of your personal information to convert the files.
          Your documents are not stored on the server after conversion is completed.
          We guarantee transparency of file processing by providing open source code of our software.

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