CSV to JSON Converter

Convert CSV to JSON or JSON to CSV instantly. Free, private, runs entirely in your browser. Supports custom delimiters and headers.

🔒 100% private. Data is converted locally in your browser and never uploaded.

How to Convert CSV to JSON

  1. Paste your CSV data into the input box (or JSON to go the other way).
  2. Set the delimiter (comma, tab, semicolon, etc.) if it's not a comma.
  3. Check First row is header if your CSV has column names.
  4. Click Auto-Detect & Convert — the tool figures out the direction.

What's Supported

  • CSV with any single-character delimiter (comma, tab, pipe, semicolon).
  • Quoted fields with embedded commas and escaped quotes.
  • JSON arrays of objects (converted to CSV with headers) or arrays of arrays.

Privacy: All conversion happens locally in your browser. No data is sent to any server.

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