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Convert XLS to Excel

Counter XLS → XLSX
Drop your files here .xls

    XLS is the old Excel 97-2003 format with a 65,536-row limit that newer tools struggle with. Converted to Excel, it opens everywhere.

    • Free
    • No sign-up
    • Batch conversion

    Why convert XLS to Excel?

    To convert XLS files to Excel, drop them on the counter above. Excel, Google Sheets and LibreOffice open XLSX, and you can add formulas, formatting and more sheets.

    Most files convert in seconds: no queue, no email address, and the XLSX result saves straight to your computer or phone.

    How to convert XLS to Excel

    1. Add your XLS files

      Drag your XLS files onto the counter or pick them with Choose files. You can add several at once.

    2. Conversion starts by itself

      Each file is converted to Excel and its row is stamped CONVERTED.

    3. Download your Excel file

      Get the file with Download. With several files you can download them all as one ZIP.

    XLS vs Excel

    PropertyXLSXLSX
    Full nameMicrosoft Excel 97-2003Microsoft Excel (Office Open XML)
    TypeSpreadsheetSpreadsheet
    Multiple sheetsYesYes
    Created byMicrosoftMicrosoft (ISO/IEC 29500)
    Year19972007
    Extensions.xls.xlsx .xlsm
    MIMEapplication/vnd.ms-excelapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet

    About the formats

    XLS

    Microsoft Excel 97-2003

    XLS is the binary spreadsheet format of Excel 97-2003. Older accounting software and enterprise systems still produce or require it.

    All XLS conversions

    XLSX

    Microsoft Excel (Office Open XML)

    XLSX is the spreadsheet format Microsoft Excel has used since 2007. It can hold several sheets, formulas, formatting and charts.

    All Excel conversions

    Frequently asked questions

    Is converting XLS to Excel free?

    Yes, completely free. No account, no daily limit, no watermark and no queue.

    Does it work on a phone?

    Yes. It works on iPhone, iPad and Android, with no app to install.

    Is there a file size limit?

    There is no size limit set by us. Files of hundreds of MB convert too; very large files take longer and are handled more comfortably on a computer than on a phone.

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