Excel workbooks are powerful, but many data tools only accept plain CSV. This free xlsx to csv converter pulls your spreadsheet’s data rows into a simple CSV file that almost anything can read. Your file never leaves your browser — nothing is uploaded, so your data stays private.

How to Use the XLSX to CSV Converter

Three quick steps — no signup, no cost, no software.

1Choose your XLSX file

Drop your XLSX file into the box above, or click it to pick a file from your device.

2Convert it

Click the Convert button and wait a moment while the data rows are written as CSV in your browser.

3Download the CSV file

Download your new CSV file, ready to use in data tools, scripts, or other apps.

Why Choose Our XLSX to CSV Converter

Built to be fast, private, and free — on any device.

Free and unlimited

Convert as many XLSX files as you like, with no account and no hidden limits.

Private by design

Your file is processed on your own device and never sent to a server.

Universal plain format

CSV is readable by nearly every data tool, script, and database loader.

Works everywhere

Any modern browser, on phone or computer, with no software to install.

XLSX to CSV Converter FAQs

Short, direct answers to the questions readers ask most.

Yes, completely free, with no account and no hidden limits.

No. The conversion carries over data rows and values only — formulas, charts, and formatting are not preserved.

No. This tool converts one file at a time, so convert each file separately.

Yes. Open this page on your phone’s browser, pick an XLSX file, and download the CSV.