How This TSV to CSV Converter Works
Paste tab-separated data, the kind you get from copying a range out of Excel or Google Sheets, and this tsv converter online turns it into comma-separated output instantly. Switch the direction and it works the other way too, a genuine csv to tsv converter in the same box, no separate tool or page reload needed.
Bidirectional Conversion, Your Choice of Delimiter
Most tsv to csv converter tools online only go one direction, this one handles csv to tab separated values just as directly, pick the direction and paste. When converting to CSV you also choose the output delimiter, comma, semicolon, or pipe, useful since some regions and tools expect semicolon-delimited CSV instead of comma. It is a tsv csv delimiter converter in the fullest sense, not just a fixed comma-only pass, and being a true bidirectional tsv csv converter means you don't need to remember which of two separate tools handles which direction.
Handling Quoted Fields Correctly
A naive split-on-delimiter approach to tab separated values to csv conversion breaks the moment a cell contains the delimiter itself, a comma inside a quoted CSV cell, or a tab inside a quoted TSV cell. This tsv to csv online converter parses quoted fields properly, so commas, tabs, and even embedded newlines inside a quoted cell stay part of that cell's value instead of splitting it into extra columns, and quote characters are escaped correctly on the way out.
Common Uses and Limitations
The most common reason to reach for an excel paste to csv converter like this is pasting a range copied from a spreadsheet, which lands on the clipboard as tab-separated data, and needing comma-separated output for an import elsewhere. It also works well for cleaning up TSV exports from database tools or command-line utilities. As a lightweight tool it handles the common cases well, for a truly massive dataset a dedicated spreadsheet application will handle it more comfortably. You can convert tsv to csv free with no row cap or watermark either way.