How to Convert CSV to TSV
How do I convert CSV to TSV?
Paste your CSV into a converter, confirm the delimiter, and convert. Each comma-separated field becomes a tab-separated field, quoted fields that contain commas stay intact, and large files convert in a background worker with a capped preview.
The three steps
Open the CSV to TSV converter, paste your table or drop a .csv file, check the delimiter or keep Auto, and press Convert. The tab-separated result appears on the right ready to copy or download. Nothing is uploaded.
Comma versus tab
CSV separates fields with commas, TSV with tabs. Tabs rarely appear inside data, so TSV avoids the quoting headaches that commas cause. Converting is simply re-serializing the same rows with a different delimiter, with quoting adjusted to the target format.
Quoted fields
A CSV field that contains a comma is wrapped in quotes, and quotes inside are doubled. The parser reads those correctly, then writes the same field for TSV without needing quotes unless the field itself contains a tab or newline. This keeps the data intact across the conversion.
Ragged rows
CSV to TSV needs a rectangular grid. Rows with a different number of fields fail loudly with the exact line number instead of being silently padded or dropped, which would shift columns. Fix the source row and convert again.
Large files
Files above about 15 MB switch to a background worker. The file is read off the main thread, you see a capped preview in the editor, and the full TSV is a one-click download. The only ceiling is device memory.
What to do with the result
TSV opens cleanly in spreadsheets, databases, and data tools that expect tabs. If the consumer needs commas again, use the reverse tool TSV to CSV. Both directions run locally and use the same RFC 4180 parser.
FAQ
Is my data uploaded?
No. Parsing and conversion run entirely in your browser, in a background worker for large tables. Nothing leaves your machine.
What happens to commas inside a field?
They are preserved. The parser reads quoted CSV fields correctly, and since TSV uses tabs the comma becomes ordinary text without quotes.
Can it handle large files?
Yes. Files above about 15 MB switch to a background worker with a capped preview and a full TSV download.
Do ragged rows work?
No. Rows with differing field counts fail with the exact line number instead of being silently padded.