Skip to content

spreadsheet → any format

Convert legacy excel workbook files

The original binary Excel workbook, from before 2007. A binary compound file with a stream per worksheet and a shared formatting table. That is the format you end up with when something needs to look the same on every screen, which is why it keeps turning up in opening a spreadsheet from an old system. From here it can become PDF, CSV, HTML and TXT, and the conversions run on your own device, so the file is never uploaded anywhere.

At a glance

Source
XLS
Where it runs
Your browser
Cost
Free, unlimited
Account
Not needed
XLS

Converter

Universal converter

On device

Drop one or more legacy excel workbook files.

or select legacy excel workbook

Your file never leaves this browser

    About the format

    The original binary Excel workbook, from before 2007.

    A binary compound file with a stream per worksheet and a shared formatting table.

    Where it is good
    • Opens in absolutely every version of Excel ever shipped
    • The reference format for very old reporting systems
    • Sometimes opens files that the modern format refuses
    Where it falls short
    • Row limit of 65,536 — a real constraint on data
    • Larger than XLSX for the same content
    • No modern features like dynamic arrays or rich charts
    You will find it on
    Legacy ERPs, old Excel installs, some government portals

    The thing people miss

    If a spreadsheet will not open in modern Excel, converting it to .xlsx and back is often enough to fix it.

    Where it goes next

    Opening a spreadsheet from an old system

    Real jobs

    What people are actually doing with XLS

    Opening a spreadsheet from an old system

    A bank or supplier that still sends .xls

    Recovering a workbook that Excel refuses to open as .xlsx

    How to

    Converting a XLS file

    1. 01

      Add your legacy excel workbook

      Drag the file onto the drop zone, or tap to browse. Only one file is needed.

    2. 02

      Pick what you want it to become

      Every format this file can become is listed in the switchboard. Pick one and the converter opens with sensible defaults already set.

    3. 03

      Download the result

      Your converted file downloads straight to your device. Nothing was uploaded, so there is no file to delete from a server afterwards.

    Also available

    XLS converts into

    PDFPDF documentCSVComma separated valuesHTMLHTML documentTXTPlain text

    Questions

    XLS conversion questions

    How do I convert XLS to another format?

    Add your legacy excel workbook file to the drop zone, choose the target format, adjust the options if you want to, and press convert. The finished file downloads immediately.

    Is my file uploaded anywhere?

    For most conversions, no. They run entirely inside your browser tab. The file is read from your device and the result is written back to your device.

    Do I need an account?

    No. There is no signup step, no email capture and no usage counter. Open the tool, convert the file, close the tab.

    Will there be a watermark or a page limit?

    Neither. On-device conversions produce a clean file with no branding and no cap on pages, size or number of files.