Convert CSV to TSV.
Swap commas for tabs for tools and pipelines that expect tab-separated values. Header row and every field preserved — and it all happens on your own device.
Why switch commas for tabs
CSV and TSV store the same thing — a plain-text table — but they mark the boundary between fields differently. CSV uses commas, which becomes awkward the moment your data containscommas (an address, a price like "1,000", a sentence): those fields have to be wrapped in quotes, and the quoting rules trip up a lot of simple parsers. Tabs almost never appear inside real data, so TSV usually needs no quoting at all — every tab is a column break, full stop. That makes it cleaner and less error-prone to read with a script or a shell tool like cut.
Where TSV shows up
Tab-separated files are the default in a lot of data and bioinformatics pipelines, and they paste straight into Excel and Google Sheets as neat columns (both apps read tab-delimited clipboard data natively). If a tool is asking for "tab-delimited" input, this is the conversion you want.
Nothing leaves your device
The conversion runs entirely in your browser — the CSV is parsed (respecting quoted fields) and re-emitted with tabs locally, so your data never uploads. Need to go back? TSV to CSV reverses it, or CSV to JSON turns it into records.
How it works
- 01
Choose your CSV
Drop a file or pick one. It stays on your device — nothing is uploaded.
- 02
Convert in your browser
FileWhirl re-delimits your table to tabs locally, in milliseconds. No server, no queue.
- 03
Download your TSV
Grab the .tsv file, ready for whatever needs tabs.
Converts entirely in your browser — never uploaded
Header row and field values preserved
Instant, even for large tables
No watermark, no signup to try
Free and open-source parsing
CSV to TSV
This converts tabular data from CSV to TSV. Values, rows and columns carry over; a plain TSV file holds data only, so formulas, charts and cell styling are dropped — what you get is the data, cleanly structured.
Common questions
Does my file get uploaded?+
No. CSV to TSV runs entirely in your browser using local code — your file never leaves your device and never touches our servers.
What's the difference between CSV and TSV?+
Both are plain-text tables. CSV separates fields with commas; TSV uses tab characters, which avoids quoting issues when your data itself contains commas.
Will my columns and quotes survive?+
Yes — we parse the CSV properly (respecting quoted fields) and re-emit it tab-delimited, so the structure round-trips faithfully.
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