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CSV ↔ JSON Converter

Convert CSV to JSON and JSON to CSV locally in your browser. Auto‑detect delimiter, headers on/off, pretty print, copy & download.

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CSV input

JSON output

Ready.

JSON input (array)

CSV output

Ready.

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About this tool

Convert CSV to JSON and JSON to CSV instantly in your browser. The CSV parser supports quoted fields, escaped quotes, commas within quotes, and multi‑line values. Choose delimiters (auto‑detect, comma, semicolon, tab, pipe), toggle header handling, and control JSON indentation. For JSON → CSV, the tool unions keys across objects and preserves the order of the first item. Nothing is uploaded; everything runs locally for privacy.