Paste tab-separated values below
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Paste TSV and click Convert// replace tabs with commas — quotes handled correctly
Convert TSV (tab-separated values) to CSV instantly. Replace tab delimiters with commas, handle quoted fields correctly, and download your CSV file free.
Ready to convert
Paste TSV and click ConvertCopy tab-separated data from Excel, Google Sheets, or any TSV file and paste it in the input box.
Select your output delimiter (comma, semicolon, or pipe) and quote character if needed.
Click Convert, then copy the result or download it as a .csv file ready to use anywhere.
TSV (Tab-Separated Values) is a plain-text format where each field is separated by a tab character. CSV (Comma-Separated Values) uses commas instead and is more universally supported. This tool replaces tab delimiters with your chosen delimiter while correctly quoting any fields that contain commas, quotes, or newlines.
TSV uses tab characters (\t) to separate fields, while CSV uses commas. Both are plain-text formats for tabular data, but CSV is more widely supported by applications, databases, and APIs.
If a field contains the output delimiter (e.g. a comma), this tool automatically wraps it in double quotes so the CSV remains valid and parseable.
Existing quote characters inside a field are escaped by doubling them (e.g. " becomes ""), which is the standard CSV escape method defined in RFC 4180.
No. All conversion happens entirely in your browser using JavaScript. Your data never leaves your device, making this tool safe for sensitive or confidential data.
Yes. Use the Output Delimiter selector to choose comma, semicolon, or pipe as your separator. Semicolons are commonly used in European locales where comma is the decimal separator.
The downloaded .csv file uses UTF-8 encoding, which supports all international characters and is compatible with Excel, Google Sheets, LibreOffice, and most modern applications.
Converting tab-separated values to comma-separated values is one of the most common data wrangling tasks for developers, analysts, and anyone who works with spreadsheets or exported data. Our TSV to CSV converter handles this in seconds — paste your data, click convert, and you're done. No registration, no file upload, no limits.
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A TSV file (Tab-Separated Values) is a plain-text format that stores tabular data. Each row corresponds to a record, and within each row, fields are separated by a horizontal tab character (\t, ASCII code 9). TSV is commonly produced by spreadsheet exports (especially from Google Sheets and Microsoft Excel), database query tools, log processors, and legacy systems.
Because tab characters rarely appear inside data values, TSV is sometimes easier to parse than CSV — but CSV is more universally supported by APIs, data import tools, and applications, which is why you often need to convert between the two formats.
CSV (Comma-Separated Values) is arguably the most universal plain-text data format. Fields in each row are separated by commas, and any field that itself contains a comma, a newline, or the quote character must be enclosed in double quotes. CSV is supported natively by Excel, Google Sheets, LibreOffice, virtually every database, and every modern programming language.
Our converter follows RFC 4180 — the de facto standard for CSV — to produce valid output every time:
" → ""), which is the RFC 4180 standard.There are many practical scenarios where you need to go from TSV to CSV:
One of the trickiest parts of converting between delimited formats is handling fields that contain the delimiter character, quotes, or newlines. A naive find-and-replace of tabs with commas will break any field that already contains a comma. Our converter avoids this by parsing each field individually and applying RFC 4180 quoting rules only where needed, so your data stays intact through the conversion.
For example, if your TSV contains a field like Smith, John (with a comma inside), the converter will output it as "Smith, John" in the CSV — correctly quoted so parsers won't split it into two fields.
While comma is the standard for CSV, it isn't always the best choice. In European countries where the comma is used as a decimal separator (e.g. 1.234,56), spreadsheet applications often default to semicolons for CSV files. If you're importing data into such a locale, choose semicolon as your output delimiter. The pipe character (|) is another popular choice for data that frequently contains commas and semicolons.
All processing happens entirely in your browser using client-side JavaScript. Your data is never sent to our servers, stored, or logged. This makes the tool safe to use with sensitive, confidential, or personally identifiable data. You can verify this by checking your network requests — you'll see no data transmission during conversion.