Convert XLSX to CSV
Convert XLSX to CSV online, free — no installation, no sign-up.
or drop files here to convert XLSX → CSV
Max file size 1 GB. Browser-side conversions have no upload limit.
How to convert XLSX to CSV
Add your file
Drop your XLSX file above or click Choose Files.
Convert
We convert your file securely on our server over an encrypted connection.
Download
Grab your new CSV file — done.
What is XLSX?
XLSX is the modern Microsoft Excel spreadsheet format.
What is CSV?
CSV (Comma-Separated Values) is a plain-text table format read by every spreadsheet and database tool.
Frequently asked questions
Drop your XLSX file into the box above (or click Choose Files), then click Convert and download your new CSV file. No account or software needed.
Yes — this converter is completely free with no watermarks and no sign-up.
Yes. Files are sent over an encrypted (HTTPS) connection and automatically deleted from our servers within an hour.
You control the output. Use the advanced options (the gear icon) to set quality, and we preserve as much fidelity as the CSV format allows.