Is my CSV data uploaded to a server?

No. Everything runs entirely in your browser with JavaScript. Nothing is sent over the network, which makes the tool safe for sensitive data.

Are quoted fields handled correctly?

Yes. A real CSV parser processes quoted fields, embedded commas and escaped quotes, then re-emits tab-separated values — values are never altered.

100% local — your data never leaves your browser

CSV to TSV Converter — Free Online Tool

Convert comma-separated values to tab-separated values instantly in your browser. Free and private: your data never leaves your device.

Instant Private Zero cookies

Delimiter

Swap: TSV → CSV

CSV input

TSV output

Why convert CSV to TSV?

Tab-separated values paste cleanly into spreadsheets and survive commas inside values without quoting. Paste your CSV above (delimiter auto-detected) to transcode it instantly.

How it works

The converter parses your CSV locally — including quoted fields and BOM — and re-emits every row with tab separators. No typing or header interpretation is applied: this is a pure, lossless transcoding of the table.

Frequently asked questions

Is my CSV data uploaded to a server?: No. Everything runs entirely in your browser with JavaScript. Nothing is sent over the network, which makes the tool safe for sensitive data.
Are quoted fields handled correctly?: Yes. A real CSV parser processes quoted fields, embedded commas and escaped quotes, then re-emits tab-separated values — values are never altered.