Convert TSV to CSV, free in your browser

Convert tab-separated rows to comma-separated values while preserving cell order and text. Values containing commas, quotes, tabs, or line breaks are safely quoted.

How to convert TSV to CSV

1. Choose a TSV or CSV file.
2. Convert the rows to comma-separated values.
3. Preview and download the CSV file.

Limits & good to know

• TSV files up to 50 MB are processed on your device.
• Formula-like values receive a leading apostrophe to reduce spreadsheet formula injection risk.
• Malformed or ambiguous quoting may be interpreted according to the app’s delimited-text parser.

Frequently asked questions

Are my files uploaded to a server?

Your files are processed on your device, not uploaded to our servers. Your file and edits are saved in this browser for recovery, and previous documents remain in Saved drafts when you open another file. Use Saved drafts to resume or delete individual copies, or clear this site’s browser data to remove all copies. Browser storage can be cleared or become unavailable; download important work.

Will tabs or line breaks inside a quoted value be kept?

Yes. Quoted cell contents are retained and escaped for the CSV output.

Is this really free, or free "until you hit a limit"?

Really free. Unlike most "free" PDF sites there is no task-per-day cap, no locked Pro features, no watermark stamped on your file, and no payment step before download. Every tool is the full tool.