CSV ⇄ JSON

Convert CSV to JSON and JSON to CSV with proper quoting, delimiters and header handling. Real CSV parsing (quoted fields, embedded commas and newlines) with instant row previews before you copy the result. Everything stays on your device.

Runs 100% in your browserNo signup neededFree forever

Paste CSV or JSON, pick a direction and optionally the delimiter. Delimiter auto-detection and a 'first row is header' toggle produce clean objects. A row preview shows exactly what will be copied.

Input

Detect delimiterFirst row is header

JSON output

Waiting for input

Paste CSV to see the converted output.

Conversion happens locally with a proper CSV parser — quoted fields, embedded commas and newlines are handled correctly. Nothing is uploaded.

Frequently asked questions

How are quoted fields with commas handled?

The parser follows RFC 4180: fields wrapped in double quotes may contain commas, quotes (escaped as "") and even newlines.

What if my CSV has no header row?

Turn off 'First row is header' and the converter falls back to column1, column2 naming.

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