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TSV to CSV / CSV to TSV Converter
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Tab-separated values are common in exports from bioinformatics tools, database dumps, and legacy systems, but most spreadsheet and web tools expect comma-separated CSV instead, and sometimes the reverse is true. This bidirectional converter switches between TSV and CSV formats in either direction, correctly handling quoted fields that contain the target delimiter so no data gets corrupted in the swap. It's useful for data engineers moving between systems with different delimiter expectations and analysts prepping files for tools that only accept one format. Both directions preserve column structure and row count exactly. Since conversion runs entirely in your browser, your data is never uploaded, and there's no signup required. Paste your TSV or CSV below to convert it instantly.
Features
- Converts TSV to CSV and CSV to TSV in either direction
- Correctly quotes fields containing the new delimiter
- Preserves row and column structure exactly
- Handles embedded quotes and line breaks in fields
- Auto-detects the input delimiter where possible
- Instant copy-to-clipboard or file download
- Live preview of the converted output
- Fully client-side with no data upload
Why use this tsv to csv / csv to tsv converter?
- Switches delimiters instantly without manual find-and-replace
- Keeps data private with entirely local processing
- Avoids broken output by properly quoting special fields
- One tool for both conversion directions
- Free with unlimited use
Frequently asked questions
What's the difference between TSV and CSV?
TSV uses a tab character to separate fields, while CSV uses a comma; both represent the same kind of tabular data, just with a different delimiter.
Why not just find-and-replace tabs with commas manually?
A simple find-and-replace breaks if a field already contains a comma or needs quoting, while this converter properly escapes and quotes fields so the output stays valid.
Can this tool convert CSV to TSV as well?
Yes, it works bidirectionally - you can convert TSV to CSV or CSV to TSV using the same interface.
Does it handle fields with embedded tabs or commas?
Yes, fields containing the target delimiter are automatically quoted so the converted file parses correctly.
Is my data uploaded when converting between formats?
No, the conversion runs entirely in your browser using local JavaScript, so your file is never sent to a server.
Why would I need TSV instead of CSV?
TSV is common in bioinformatics, some database export tools, and datasets where field values frequently contain commas, making tabs a cleaner delimiter choice.
Does the tool auto-detect which format I've pasted?
Yes, it attempts to detect whether your input is tab or comma delimited and sets the conversion direction accordingly, which you can override manually.