Local processing

XLSX to CSV Converter

Convert the first worksheet in an XLSX file to CSV locally in your browser.

From To

Select document Drop a file here or choose one from your device. Choose a file

Spreadsheets convert locally on this device, ideal for quick table cleanup and export.

Select a document before converting.

Related converters

TSV CSV Convert TSV files to CSV locally in your browser. JSON CSV Convert JSON files to CSV locally in your browser. TXT CSV Convert TXT files to CSV locally in your browser. HTML CSV Convert HTML files to CSV locally in your browser.

Questions

Are XLSX files uploaded during conversion?

No. Spreadsheet conversion runs locally in this browser, so the selected file stays on your device.

Will formulas, multiple sheets, and cell styles be preserved?

No. The converter reads the first worksheet as data and outputs a clean data file. Complex formulas, styling, and workbook structure are not preserved.