CSV ↔ JSON

Convert CSV data to JSON, or JSON arrays of objects back to CSV. Handles headers, pretty-printing, and errors gracefully.

Input

CSV or JSON

Output

JSON or CSV

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CSV → JSON JSON → CSV Has header Pretty print

FAQ

Does it handle quoted fields?: Yes. CSV fields with commas, newlines, or quotes are properly parsed and re-encoded as RFC 4180 compliant CSV.
What JSON shape does CSV produce?: With headers enabled: an array of objects { "column": "value", ... }. Without headers: an array of arrays.
Is my data uploaded anywhere?: No. All conversion happens locally in your browser.