CSV to TSV Converter
Convert CSV files to TSV (tab-separated) format
Convert a CSV file to tab-separated values in your browser. Upload or paste the CSV, preview the parsed table, and download a TSV ready for tools that expect tabs — and for pasting straight into a spreadsheet, where tab-separated text lands in the correct cells automatically.
Because the source is parsed as CSV first, quoted fields are understood before anything is rewritten. A value like "Smith, John" is one field, not two, so it stays in one column when the tabs are written.
TSV is a common requirement for bioinformatics pipelines, analytics loaders, and older command-line tooling that splits on tabs. It is also the safer format when your data is full of commas and you want to stop fighting quoting rules.
Drop your file here or browse from your device
Accepts CSV, TXT. Maximum input: 10 MiB. Files above this hard limit are rejected before local processing.
How to Convert
- Upload your CSV file or paste CSV data
- Check the preview to confirm the columns parsed correctly
- Convert to tab-separated output
- Download the TSV file
Features
- Parses quoted CSV fields correctly before writing tabs
- Keeps values containing commas in a single column
- Handles the delimiter of the source file automatically
- Preview the parsed table before converting
- Output pastes directly into spreadsheet cells
- Runs entirely in your browser — no upload required
Use Cases
- Prepare data for a pipeline or loader that requires tab separation
- Produce text you can paste straight into spreadsheet cells
- Avoid quoting problems when your values are full of commas
- Feed command-line tools that split fields on tabs
- Match the input format expected by analytics or research software
Frequently Asked Questions
Why convert CSV to TSV at all?
Two common reasons: a destination tool requires tabs, or your data contains so many commas that CSV quoting becomes awkward. Tabs almost never appear inside values, so the format needs far less escaping.
What happens to a value that contains a comma?
Nothing — it stays in one field. The CSV is parsed with its quoting rules applied before the tabs are written, so "Smith, John" remains a single value in a single column.
Can I paste the result into Excel or Google Sheets?
Yes. Both split pasted text on tabs by default, so tab-separated output drops into the correct cells without going through an import dialog.
What if a value contains a tab or a newline?
That is the one case TSV handles poorly, since it has no universal quoting convention. Check the preview for values with embedded tabs or line breaks and clean them first if the destination is strict about row structure.
Does the source have to use commas?
No. The delimiter of the incoming file is detected, so semicolon and pipe-separated files convert to TSV just as well.
Is my data uploaded?
No. The file is parsed and converted in your browser and the contents are not sent to the app server.