AnyTool
Your files never leave your device. All processing happens locally in your browser.

How do I convert a TSV file to CSV?

Paste your tab-separated text or drop a .tsv file into AnyTool's TSV to CSV converter. It re-delimits to CSV in your browser with correct RFC-4180 quoting, lets you pick the delimiter and encoding, then copy or download. Your file is never uploaded.

  • Output as comma, semicolon, tab, pipe, or a custom delimiter
  • Correct quoting for fields with commas, quotes, or newlines
  • Optional UTF-8 BOM for Excel · LF or CRLF line endings
  • 100% in your browser — no upload, no signup, works offline

What is

TSV to CSV Conversion

Converting TSV to CSV replaces the tab field separator with a comma (or other delimiter) and adds RFC-4180 quoting so fields containing commas, quotes, or line breaks stay intact.

File Conversion

Related terms

Tab-separated valuesComma-separated valuesRFC 4180Delimiter

How to Convert TSV to CSV

Convert tab-separated data to CSV entirely in your browser.

10 secWeb browser
  1. 1

    Add data

    Paste tab-separated text or drop a .tsv / .txt file. Nothing is uploaded.

  2. 2

    Pick options

    Choose the output delimiter (comma, semicolon, tab, pipe, or custom) and quoting style.

  3. 3

    Tune (optional)

    Add a UTF-8 BOM for Excel, choose LF/CRLF line endings, skip empty lines, or trim whitespace.

  4. 4

    Export

    Copy the CSV or download the .csv file. It converts live as you type.

Result: A .csv file or copied CSV text

Frequently Asked Questions

Yes — AnyTool converts in your browser, so the file never leaves your device.

The whole conversion runs client-side with the Papa Parse library; nothing is uploaded to any server.

No — fields containing commas, quotes, or newlines are automatically quoted (RFC 4180).

AnyTool uses RFC-4180 quoting, so a value like "Echo Park, CA" is wrapped in double-quotes and stays one field.

Yes — enable the UTF-8 BOM option so Excel detects the encoding.

Turn on "Add UTF-8 BOM" in advanced options; Excel then opens accented and non-Latin characters correctly.

Detailed Explanation

Methodology

How TSV to CSV Conversion Works

AnyTool parses tab-separated input with Papa Parse in the browser, then re-serializes it with the chosen delimiter. Quoting follows RFC 4180: any field containing the delimiter, a double-quote, or a line break is wrapped in double-quotes and embedded quotes are doubled. Options control the delimiter, quoting policy, UTF-8 BOM, and line endings.

  • Runs client-side via Papa Parse — the file is never uploaded
  • RFC-4180 quoting prevents commas/quotes/newlines from corrupting rows
  • Output delimiter: comma, semicolon, tab, pipe, or custom
  • Optional UTF-8 BOM for Excel; LF or CRLF line endings
  • Skip empty lines and trim whitespace
Privacy & Security

Privacy and Offline Use

Conversion happens entirely in the browser, so the data never touches a server. The tool works offline after first load and has no fixed file-size limit beyond available device memory.

TSV-to-CSV: in-browser (AnyTool) vs typical online converters
CapabilityAnyToolTypical upload-based tools
File handlingProcessed in your browserUploaded to a server
QuotingRFC 4180 (correct)Often naive / can break rows
Delimiter choiceComma/semicolon/tab/pipe/customOften comma only
Excel encodingOptional UTF-8 BOMOften none
File-size limitDevice memory onlyCommonly capped on free tier
Cost / signupFree, no signupOften limited or gated

Capabilities reflect the live AnyTool tool; competitor behavior varies by service.