Convert TSV to CSV and CSV to TSV

Convert TSV to CSV or CSV to TSV online, in either direction, with a single click. This free TSV/CSV converter lets you drop or paste a .csv, .tsv or .txt file and instantly re-serialise your rows and columns to the delimiter you need — tabs to commas, or commas to tabs. Fields that contain a comma, quote or line break are safely quoted (RFC-4180 style), so your table round-trips without breaking. Everything runs 100% in your browser, so your data stays private and is never uploaded to any server.

🔒 100% private — files never leave your device

Loading…

How to use

  1. Pick a direction: TSV to CSV or CSV to TSV.
  2. Drop or select a .csv, .tsv or .txt file, or paste your data straight into the input box.
  3. Review the converted output in the preview panel below.
  4. Copy the result to your clipboard, or download it with the correct .csv or .tsv extension.

Frequently asked questions

What is the difference between TSV and CSV?

TSV (tab-separated values) separates each column with a tab character, while CSV (comma-separated values) separates columns with a comma. Both store the same rows and columns of tabular data — only the delimiter differs, which is why converting between them is quick and lossless.

Which file formats and delimiters are supported?

You can drop or select .csv, .tsv and .txt files, or simply paste raw text. CSV is parsed and written with a comma delimiter and double-quote quoting, and TSV is parsed and written with tab-separated columns.

Is my data uploaded anywhere?

No. The conversion happens entirely in your browser using local JavaScript — your file and its contents never leave your device and nothing is sent to a server.

Are my rows, columns and special characters preserved?

Yes. Every row and column is kept exactly as-is. When converting to CSV, any field that contains a comma, quote or newline is wrapped in double quotes and inner quotes are doubled, so the table stays intact and round-trips safely.

Is there a file-size or row limit?

There is no fixed limit set by the tool. Because the conversion runs in your browser, very large files depend on your device's available memory, but typical spreadsheets and exports convert instantly.

How do I handle a field that contains tabs or commas when converting to TSV?

When converting to TSV, any tabs or line breaks inside a cell are replaced with a single space so the tab-separated grid stays aligned. When converting to CSV, such fields are quoted instead, keeping the original content intact.

About this tool

Free TSV to CSV and CSV to TSV converter that runs 100% in your browser. Drop or paste a .csv, .tsv or .txt file, pick a direction, and convert instantly — nothing is uploaded.

Related tools