How to use XLS to CSV Converter
- Drop your XLS files into the box above, or click to choose
- Adjust the options if you like; the defaults work well
- Click Convert, then download your CSV files (or all as a ZIP)
XLS vs CSV at a glance
| Property | XLS | CSV |
|---|---|---|
| Full name | Excel 97–2003 workbook | Comma-Separated Values |
| Extension | .xls | .csv |
About this tool
What is XLS?
XLS is the older binary Excel format used before 2007. It is still common in legacy systems and bank exports.
What is CSV?
CSV is plain text with one row per line and commas between columns. Every database and spreadsheet can import it, but it has no formatting or sheets.
Export old XLS workbooks to CSV for databases, scripts and modern tools.
Frequently asked questions
How do I convert XLS to CSV?
Drop the XLS file into the converter on this page and click Convert. The CSV file is created on your device in a second or two, ready to download.
Why convert XLS to CSV?
Export old XLS workbooks to CSV for databases, scripts and modern tools.
Is this XLS to CSV converter free?
Yes. There are no limits, no watermark and no sign-up. You can convert many XLS files at once.
Will converting XLS to CSV reduce quality?
No. CSV keeps your data exactly.
Are my files uploaded to a server?
No. ConvertBrightly processes files with JavaScript inside your browser. Nothing is sent over the network, and the files disappear when you close the tab. You can even disconnect from the internet after the page loads.
Related tools
Updated · Built by the ConvertBrightly team · How our tools work · Report a problem