CSV ⇄ JSON Converter
Paste CSV or JSON below and convert either way — quoted fields, embedded commas, and semicolon or tab delimiters are all handled. Everything stays on your device.
Paste some CSV or JSON to begin.
How does the CSV → JSON conversion work?
The first row is treated as column headers, and every row after it becomes a JSON object using those headers as keys. Quoted fields (with embedded commas, quotes, or line breaks) follow the standard CSV quoting rules, so values like "Doe, Jane" stay intact as a single field.
What happens with JSON → CSV?
The tool expects a JSON array of objects (or a single object). The column headers become the union of every key seen across all objects — if a field is missing from one row, it's left blank in that row's CSV cell rather than breaking the conversion.
Is my data sent anywhere?
No. Parsing and conversion both happen entirely in your browser — nothing is uploaded to a server or logged anywhere.