Local, private conversion

XLSX to CSV converter for private Excel files

Drop an XLSX workbook and export the first worksheet to CSV locally, with no upload.

Stays in your browser Adjust before saving PDF Studio included

Drop one or more files here or choose from your device One file opens the detailed view; several create a private batch. Processed on this device

Common source formats

AVIFBMPCSVDOCXGIFHTMLICOJPG

How to convert XLSX to CSV

Convert XLSX to CSV locally when you need portable spreadsheet rows from an Excel workbook. ConvertRS extracts the first worksheet in your browser and keeps the file on your device.

Steps

Drop or choose your XLSX workbook.
Confirm CSV as the result format.
Download the locally exported CSV without uploading your spreadsheet.

Best for

Exporting the first worksheet from an Excel XLSX file to CSV.
Private spreadsheet conversion for sensitive rows.
Creating portable CSV data for databases, scripts, and spreadsheets.

What changes

Only the first worksheet is exported in this version.
Formulas are exported as cached cell values when present.
Formatting, charts, images, comments, and macros are not included.

Can I convert XLSX to CSV without uploading?

Yes. ConvertRS reads the workbook in your browser and creates the CSV locally on your device.

Are all worksheets exported?

Not yet. This converter exports the first worksheet in the workbook.

What happens to formulas and formatting?

Formulas are exported as cached cell values when present. Formatting, charts, images, comments, and macros are not included in CSV.