ToolBirch

TSV to CSV

Convert tab-separated values into comma-separated CSV.File & Data Tools

TSV to CSV

Convert tab-separated values to comma-separated values, quoting any field that contains a comma or newline.

About this tool

Tab-delimited exports from spreadsheets and databases convert cleanly here, with any field containing a comma or newline quoted per the CSV standard.

How to use the TSV to CSV tool

  1. Paste the TSV. Tabs separate the fields; the parser knows about quotes too.
  2. Convert. Re-serialised with comma delimiters.
  3. Copy the CSV. Standard quoting applied.

Supported formats

Input

  • Plain text or file input

Output

  • Converted or analysed output

Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.

Frequently asked questions

Why not just replace tabs with commas?

Because fields containing commas or newlines must be quoted — this parser does that.

Are quoted TSV fields supported?

Yes, the same RFC 4180 grammar applies.

Is the delimiter configurable?

Input is always tab; output is always comma in this release.

Privacy

Everything you enter stays in this browser tab. There is no upload endpoint for tool inputs, no account, and no server-side copy of your text or files. Results are produced locally and disappear when you close the page.

No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.

Known limitations

  • Mixed line endings are normalised on output.

Related tools

Other free tools from the same collection.

CSV ViewerView CSV files as a clean table with correct RFC 4180 parsing.CSV EditorEdit CSV cells in a grid and export clean, correctly-escaped CSV.CSV to ExcelConvert CSV into a real .xls workbook with typed numeric cells.Excel to CSVRead .xlsx workbooks locally and export the first sheet as CSV.