CSV ↔ JSON

Convert CSV to JSON and back. Free, no sign-up, files stay on your device.

🔒 100% private — processing happens in your browser. Nothing is uploaded.

Convert CSV to JSON (and JSON to CSV)

  1. Paste data or open a .csv / .json file.
  2. Pick the direction and delimiter.
  3. Click Convert, then copy or download.

Handles quoted fields, commas inside values and Excel-style semicolon CSV. Numbers are detected automatically. Your data never leaves your browser.

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