Convert TSV to CSV.
Turn tab-separated data into a comma-separated CSV that opens cleanly in Excel, Google Sheets or Numbers — converted on your own device, never uploaded.
Why convert TSV to CSV
TSV (tab-separated) is common in data pipelines, but CSV is the universal interchange format for tables: double-click a .csv and it opens straight into Excel, Google Sheets or Numbers, and virtually every app that imports data accepts it. If a tool or upload form asks for "CSV", converting your TSV is the way to get it to load cleanly.
Commas in your data are handled
The one thing to get right going from tabs to commas is fields that already contain a comma, quote or line break — those would otherwise split into the wrong columns. This conversion follows the CSV standard and automatically wraps any such field in quotes, so every column lands where it should when a spreadsheet opens it.
Private and instant
It all runs in your browser — your table is parsed and re-emitted as CSV locally, so nothing uploads. Need the other direction, or a structured format? CSV to TSV and CSV to JSON are a click away.
How it works
- 01
Choose your TSV
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 commas locally, quoting any field that needs it. No server, no queue.
- 03
Download your CSV
Grab the .csv file, ready for any spreadsheet app.
Converts entirely in your browser — never uploaded
Fields with commas are safely quoted
Instant, even for large tables
No watermark, no signup to try
Free and open-source parsing
TSV to CSV
This converts tabular data from TSV to CSV. Values, rows and columns carry over; a plain CSV 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. TSV to CSV runs entirely in your browser using local code — your file never leaves your device and never touches our servers.
Will commas in my data break the CSV?+
No — any field containing a comma, quote or newline is automatically wrapped in quotes per the CSV standard, so spreadsheets read every column correctly.
Can I open the result in Excel?+
Yes. The output is standard CSV that opens directly in Excel, Google Sheets, Numbers and anything else that reads CSV.
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