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CSV ⇄ JSON Converter

Convert CSV to JSON or JSON to CSV in your browser. Paste data, convert, and copy.

Runs fully in your browser; files are not uploaded.Offline mode
Presets
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Tip: For JSON → CSV, provide an array of objects. Supports various delimiters.

Output

Converted output will appear here.

How to use

  • Select direction (CSV → JSON or JSON → CSV) and set delimiter/header options.
  • Paste data or load a file; use trim/strip/strict toggles if your CSV needs cleanup.
  • Press Convert or enable Auto-convert; copy/download results or clear output as needed.
  • For JSON → CSV, provide an array of objects; for CSV → JSON, ensure consistent columns for strict mode.

FAQ

Is my data uploaded?

No. Conversion happens locally in your browser; files are not sent to a server.

What delimiters are supported?

Comma, semicolon, tab, and pipe. You can also strip wrapping quotes and trim whitespace.

Any size limits?

The tool warns on very large inputs and enforces a soft limit of 20,000 rows for reliability.