Free TSV to CSV converter — header detection, automatic typing and RFC 4180-correct parsing, entirely in your browser. No upload, no signup.
TSV uses tabs instead of commas as the field separator. Because real-world text contains commas far more often than tabs, TSV needs less quoting and is a favorite for data pipelines, log processing and copy-pasting into spreadsheets.
CSV (comma-separated values) is the lingua franca of tabular data: one row per line, commas between fields. Every spreadsheet, database and analytics tool imports and exports it, which makes it the default for moving tables between systems.
No — parsing and conversion happen entirely in your browser. Spreadsheet exports, API payloads and log data never leave your device.
Drop your TSV file (or paste the data), check the options — header row, pretty-printing — and press Convert. The CSV result appears instantly and downloads from your browser.
Yes. The parser follows RFC 4180: quoted fields, escaped quotes and embedded newlines all convert correctly.
Yes. Cells are re-quoted only where the CSV format needs it — when a value contains the delimiter, a double quote or a line break — so a comma-heavy table usually loses most of its quoting on the way to CSV. Rows are written with CRLF line endings, which every spreadsheet accepts.
Yes. The two panes only display the first 100,000 characters so typing stays responsive, but the conversion and the downloaded file always use the complete input. Everything is held in memory, so extremely large files are still better handled by a script.