Why not just replace tabs with commas?

Because text often contains commas. A plain find-and-replace would split "Paris, France" into two columns. This converter quotes any field that holds a comma, a quote or a line break, so every row keeps its columns.

Can I use a semicolon instead of a comma?

Yes. Choose a semicolon or a pipe as the output delimiter. Semicolons suit spreadsheet apps set to a European locale, where the comma is the decimal separator.

Are my files uploaded anywhere?

No. Every live tool on JustYourConvert opens and converts your files inside your browser, on your own device. Nothing is sent to our servers, and the result is saved straight from your browser.

Is JustYourConvert free?

Yes. Every tool is free, with no sign-up, no watermark and no daily limit. Clearly labeled ads keep it that way.

Is there a file size limit?

Only your device's memory. Because the work happens in your browser, very large files can be slow on phones and older computers. Each tool says its practical limit under the drop area.

TSV to CSV

Swap tabs for commas without breaking any field.

100% Free
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TSV to CSV

Turn tab-separated data into comma-separated CSV

TSV input

CSV output

From

Output delimiter

Open correctly in ExcelAdds a UTF-8 marker so Excel shows accents and emoji right.

First row is a headerIts values become keys or column names.

Output-

Processed on your device. Nothing is uploaded.

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How to convert TSV to CSV

Three steps, all in your browser.

1
Paste or open your data
Drop a file or paste rows straight into the input box.
2
Check the options
Delimiter, header row, indentation: the output updates live.
3
Download
Save the converted file, or copy the output.

TSV to CSV: what to know

TSV (tab-separated values) is what you get when you copy cells from a spreadsheet or export from many databases and scientific tools. CSV (comma-separated values) is the format most import forms and apps ask for. The two look alike, but switching between them takes more than replacing tabs with commas.

This converter reads each tab-separated row, then writes it as CSV following RFC 4180. Any field that contains a comma, a double quote or a line break is wrapped in quotes, and quotes inside it are doubled, so "Paris, France" stays one column. Quoted fields in the TSV are read correctly too. Blank lines are skipped, a byte order mark is removed, and rows with a different number of fields are padded and reported in the warnings.

You can choose the output delimiter: comma by default, or a semicolon or pipe for apps that expect them. Lines end with Windows-style line breaks, as the CSV standard specifies, and every spreadsheet and CSV parser reads them. All text stays Unicode, so accents and emoji pass through unchanged.

Popular uses

Preparing a database or bioinformatics export for an import form
Converting cells copied from a spreadsheet into a CSV file
Switching a .tab or .tsv file to the format a tool expects

Tips for the best result

Read the warnings: a row with a missing or extra field usually means a stray tab or line break in the data.
Check the preview for columns that look shifted; that usually means a stray tab in the data.
Use a semicolon delimiter for spreadsheet apps set to a European locale.

Read how JustYourConvert works and our privacy details. Keep your original files and check a converted file before you replace anything.