Tiny Toolkit

TSV to CSV Converter — Free, Instant, No Upload

Convert tab-separated values (TSV) to comma-separated values (CSV) or vice versa. Paste your TSV data, or type it directly using Tab to separate columns. Fields containing commas are automatically wrapped in double quotes per the CSV specification, so your data arrives intact. TSV is the default export format for many databases, MySQL, and spreadsheet applications like Google Sheets and Excel. CSV is the format expected by most import tools, APIs, analytics platforms, and data pipelines.

All processing happens in your browser. No data is sent to any server.

Frequently Asked Questions

What is the difference between TSV and CSV?
TSV (Tab-Separated Values) uses a tab character as the delimiter between fields; CSV (Comma-Separated Values) uses a comma. Both are plain-text formats for tabular data and are supported by Excel, Google Sheets, and most data tools.
Why use TSV instead of CSV?
TSV is useful when your data contains commas, since tab characters rarely appear inside data values. Databases like MySQL and PostgreSQL default to tab-delimited output, and many data science tools produce TSV exports. CSV is more universally accepted by import tools and APIs, which is why converting is often necessary.
How does it handle fields that contain commas?
Any field containing a comma, double quote, or newline is automatically wrapped in double quotes in the CSV output, per the RFC 4180 standard. Existing double quotes inside a field are escaped by doubling them.
Can I type TSV directly in the input box?
Yes. Press Tab to insert a tab character between columns and Enter to start a new row. The tool intercepts the Tab key so it inserts a tab rather than moving focus away from the input.
Can I convert CSV back to TSV?
Yes. Toggle the direction switch at the top of the tool to switch to CSV-to-TSV mode.
How do I export TSV from Google Sheets or Excel?
In Google Sheets, go to File > Download > Tab-separated values (.tsv). In Excel, choose Save As and select the text format. You can then paste the file contents directly into this tool.

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