Online Tool Store
TSV to CSV Converter
Convert tab-separated (TSV) data into properly-quoted CSV, ready to copy or download, entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example shown — paste your own tab-separated data, e.g. copied from a spreadsheet.
How the TSV to CSV converter works
- Paste tab-separated data — often copied straight from a spreadsheet.
- The tool splits each line on tab characters, then rejoins the fields with commas.
- Any field containing a comma, quote, or line break is automatically wrapped in quotes so it stays a single field once converted.
FAQ
Why would a field get wrapped in quotes?
CSV uses commas as its delimiter, so if a field's original content already contains a comma, a quote character, or a line break, it needs to be wrapped in double quotes (with any internal quotes doubled) so it isn't mistaken for a column boundary — this tool applies that quoting automatically wherever it's needed.
Where does TSV data usually come from?
Copying cells from a spreadsheet (like Excel or Google Sheets) and pasting them as plain text typically produces tab-separated values — this tool turns that pasted data into properly-formatted CSV.
Does it handle a header row specially?
No — every row, including a header row if your data has one, is converted the same way. There's no special handling needed since CSV and TSV both just treat the first row as regular data unless a program interprets it as a header.
Is my data sent anywhere?
No. Conversion happens instantly in your browser as you type — nothing is sent to Online Tool Store or stored.
How we compare
| Feature | Online Tool Store | ConvertCSV.com | Find-and-replace in a text editor |
|---|---|---|---|
| Properly quotes fields with commas | ✓ | ✓ | Breaks on embedded commas |
| Instant as you paste | ✓ | Convert button | Manual, slow |
| No file upload needed | ✓ | Often requires file upload | ✓ |
For a quick paste-and-convert from spreadsheet data to CSV without a file upload, the Online Tool Store TSV to CSV Converter handles the quoting correctly.