OpenCSV
/ free tool

CSV Delimiter Converter (CSV ⇄ TSV)

Convert between CSV and TSV or swap delimiters (comma, semicolon, tab, pipe) free in your browser. Auto-detects input format.

  • 100% free
  • Runs in your browser — nothing is uploaded
  • No signup required

European Excel exports use semicolons, database dumps use tabs or pipes, and most tools expect plain commas. This converter reads any of them — the input delimiter is detected automatically — and rewrites the file with the delimiter you need.

Quoting is handled correctly in both directions: values containing the new delimiter get quoted, and unnecessary quotes are cleaned up.

Example

Input
name,city
Ada,London
Output
name	city
Ada	London  (as TSV)

Your data never leaves your device

Like everything at OpenCSV, this tool processes files locally in your browser. There is no upload, no server-side processing, and no copy of your data anywhere — which makes it safe for customer lists, financial exports, and other sensitive files.

/ frequently asked

Frequently Asked Questions

  • The parser samples your data and picks the most consistent delimiter among comma, semicolon, tab, and pipe.
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