Convert TSV files to CSV free in your browser — no signup, no install, and the file is never uploaded to a server. CSV keeps full quality with no further loss.
Add your TSV file
Drag the TSV file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
Confirm CSV as the output
CSV is already selected as the output format on this page. Only the options this format actually supports show up, such as a page range or sheet selection.
Run the conversion
Press the convert button. Processing happens on your own device, so the time depends on your computer rather than a server queue.
Download the CSV file
When it finishes, download the CSV file. Converting multiple files gives you the option to download them together as a ZIP.
The same idea as CSV but delimited by tabs. It is safer than CSV when the data itself frequently contains commas, such as addresses or sentences.
The simplest tabular format: one row per line, columns separated by commas. Every program and language can read it, making it the lingua franca of data exchange.
Yes. TSV to CSV conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
No. The conversion runs entirely inside your browser using WebAssembly, so the TSV file never leaves your device. That is also why it works without an internet connection once the page has loaded.
It can go either way. Both formats are lossless, so nothing is thrown away — the size difference comes from how each one packs the same data.
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
Spreadsheet converter
What each file format is, what it is used for, and which formats it can be converted to.
Open converter Browse the full format reference