Excel to CSV Converter
Upload an Excel file (.xlsx, .xls) and download it as CSV — free and private, nothing is uploaded to a server.
Convert a real Excel workbook (.xlsx, .xls, .ods) to a clean CSV file by uploading it — the first sheet is exported and offered for download. Unlike most converters, this one does everything inside your browser using JavaScript, so your spreadsheet is never sent to a server. That makes it safe for customer lists, financials and anything private, and it works on any device, including phones and locked-down work laptops.
CSV is the universal format for importing data into other systems, feeding scripts and long-term archival. To go the other way, use CSV to Excel; for structured data, use Excel to JSON.
Frequently asked questions
How do I convert Excel to CSV for free?
Upload your .xlsx or .xls file and click convert; the first sheet is exported as a CSV you can download. No sign-up or watermark.
Is my Excel file uploaded to a server?
No. The conversion runs entirely in your browser, so your spreadsheet never leaves your device.
What happens to multiple sheets?
A CSV holds one table, so the first sheet is converted. Move another sheet to the front in Excel to export it instead.
Are formulas kept?
Formulas are exported as their calculated values, which is how CSV represents data.