TSV to CSV

Tabs to commas.

And back again.

TSV
CSV
No upload
Works offline
No tracking

Need to convert data files offline? The offline bundle handles unlimited files with no limits. $49 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Paste TSV data or drop a .tsv file. It stays on your device.
02
Convert
fwip converts tab separators to commas (or vice versa). Quoted fields are handled correctly.
03
Download
Copy the result or download as .csv. Nothing was ever uploaded.
// Why this is different

Your data never leaves your machine.

Most online converters upload your data to a server. Your file passes through systems you don't control.

fwip works differently. The conversion engine runs entirely in your browser. Your data is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

What is TSV?▾
TSV (Tab-Separated Values) is like CSV but uses tabs instead of commas. It's common for spreadsheet exports and database dumps.
When should I use TSV vs CSV?▾
Use TSV when your data contains commas (like addresses). Use CSV for broader compatibility. TSV avoids quoting issues with comma-heavy data.
Does this handle quoted fields?▾
Yes. fwip's parser handles quoted fields, escaped quotes, commas inside quotes, and newlines inside quotes.
Can I convert CSV to TSV?▾
Yes. Toggle the direction to "CSV → TSV" to convert comma-separated data to tab-separated.
What about other delimiters?▾
This tool handles tab and comma. For semicolons or custom delimiters, use the JSON to CSV tool which supports multiple delimiter options.
// Related tools

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