Excel to CSV Converter Convert XLSX to CSV in your browser. No login. No upload.
Free No login Local only
Need CSV to Excel?
100% browser-based
Drop XLSX here Preview the first sheet, then download your CSV file.

Private Excel to CSV converter

Excel to CSV Converter

Convert XLSX files to CSV directly in your browser. Preview the sheet, search rows, hide columns if needed, and download CSV without sending your spreadsheet to a server.

XLSX input No login required Your file stays local
Browser-based XLSX files are processed locally. Preview first Check the sheet before download. CSV output Download clean CSV from the preview.
Simple conversion

Convert Excel to CSV

Open an XLSX file, preview the first sheet, and download a CSV file from the same page.

Preview

Inspect rows first

Search the preview table and hide columns before downloading your CSV output.

Privacy

No upload required

Conversion runs in your browser, so your Excel file does not need to be uploaded to a cloud converter.

Excel to CSV FAQ

Can I convert Excel to CSV online?

Yes. Open an XLSX file, preview the sheet, then use Download CSV.

Is my Excel file uploaded?

No. The XLSX file is read in your browser and converted locally.

Does it support XLS files?

This first version focuses on modern XLSX files. Legacy XLS support can be added later.

Which sheet is converted?

The first worksheet is converted in this version. Sheet selection is planned for a later update.