Free TSV to CSV converter

Why convert TSV to CSV?

People convert TSV to CSV because a TSV is plain text split by tab characters, which almost nobody recognises as a spreadsheet, while CSV imports into every spreadsheet, database and analytics tool ever written.

How to convert TSV to CSV

1. Choose your TSV file. Drop it on the box above, or tap to browse. You can pick several files at once.
2. Confirm the target is .csv. It is preselected when your browser can encode it; otherwise the closest available target is chosen. Adjust quality, size or the other options if you want to.
3. Convert and download. Press Convert, then Download. Your file stays on your device the whole time.

What is a .tsv file?

TSV is CSV with tabs instead of commas, which sidesteps the classic problem of values that themselves contain commas. It is common in bioinformatics, log processing and anywhere data is piped between Unix tools.

What is a .csv file?

CSV is a table written as plain text: one row per line, values separated by commas. Every spreadsheet, database and programming language on earth can read and write it, which is why it remains the default way to move data between systems — at the cost of storing no formatting, no formulas and no idea what a date is.

What to expect from this conversion

Cell values are carried across exactly as they appear. Formulas become their calculated results, and formats that hold only one table — CSV and TSV — take the first sheet of a multi-sheet workbook. A CSV holds one sheet of values, so formulas, formatting and extra sheets do not come across.

Is it private?

Yes, by design. Every conversion happens inside your own browser using your device’s processor — there is no server that receives your TSV file, so there is nothing for anyone to store, scan or leak. You can confirm it yourself: open your browser’s developer tools, watch the Network tab while you convert, and you will see no upload.

Questions about TSV to CSV

Is this TSV to CSV converter free?

Yes, completely. There is no account, no daily limit, no watermark and no premium tier.

Is my TSV file uploaded to a server?

No. The conversion runs inside your own browser using your device's processor. The file is read from your disk, converted in memory and saved back to your disk — nothing is transmitted, so there is nothing for anyone to store.

Can I convert TSV to CSV online without downloading software?

Yes. This is an online TSV to CSV converter that runs in your browser, so there is nothing to install and no app to trust with your files. It works the same on a phone.

What happens to the quality?

Cell values are carried across exactly as they appear. Formulas become their calculated results, and formats that hold only one table — CSV and TSV — take the first sheet of a multi-sheet workbook. A CSV holds one sheet of values, so formulas, formatting and extra sheets do not come across.

How do I convert TSV to CSV on Windows, Mac or Linux?

The same way on all three: open this page in Chrome, Edge, Firefox or Safari, drop the TSV file, press Convert and download the CSV. Nothing is installed and no admin permission is needed.

Can I convert several TSV files at once?

Yes. Select as many files as you like and they are converted one after another in a single tap, with a download for each and a zip of all of them.

Can I convert TSV to CSV without Python or a script?

Yes — that is what this page is for. Python does the same job well if you already have it set up and thousands of files to process; for one file, or a handful, the browser is faster than installing anything.

Should I keep the original TSV file?

Yes — keep it, converting never touches it. The reason to make a copy in another format is that a TSV is plain text split by tab characters, which almost nobody recognises as a spreadsheet.

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