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Optimize & Repair · browser workspace

Change CSV Delimiter

Detect and change CSV separators such as comma, tab, semicolon, or pipe without opening the file in Excel. Process locally in your browser with HappyCSV.

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How to use this tool

Quick start

Built for converting comma, tab, semicolon, or pipe-delimited files for a different import system.

Everything runs in your browser, so you can test the workflow with sample data when available before using production files.

Output: A CSV serialized with the selected delimiter.

  1. 1Choose the input delimiter or auto-detect it.
  2. 2Choose the output delimiter.
  3. 3Download and verify the converted file.

How to Change CSV Delimiter

  1. 1Choose the input delimiter or auto-detect it.
  2. 2Choose the output delimiter.
  3. 3Download and verify the converted file.

Why Use This Tool?

  • ✓Detect and change CSV separators such as comma, tab, semicolon, or pipe without opening the file in Excel.
  • ✓A CSV serialized with the selected delimiter.
  • ✓Files are processed locally in this browser.
  • ✓Keep the source file and review the result before importing it elsewhere.

Frequently Asked Questions

What does this tool support?

A CSV serialized with the selected delimiter.

What are the processing limits?

Up to 100 MB per CSV, 20 MB per complex document; 250,000 rows, 1,000 columns, 2 million cells, and 128 MB output. Jobs stop after two minutes. Large files may need splitting.

Are my files uploaded?

No. File processing stays in your browser. Files are not automatically saved for the next visit.

Can I process multiple files?

This tool processes one file at a time.