JSON ↔ CSV Converter
Convert JSON to CSV (and back)
To convert JSON to CSV, paste an array of objects — each object becomes a row and the keys become columns. This converter runs entirely in your browser, so your data is never uploaded, making it safe for sensitive files. Switch the direction to go from CSV back to JSON.
Frequently asked questions
How do I convert JSON to CSV?
Paste an array of JSON objects and the converter produces CSV: each object becomes a row and the union of keys becomes the header columns. Values with commas, quotes, or line breaks are quoted automatically.
Is my data uploaded anywhere?
No. Conversion runs entirely in your browser with JavaScript — your data never leaves your computer, which makes it safe for sensitive files.
Can I convert CSV back to JSON?
Yes — switch the direction to CSV → JSON, paste CSV with a header row, and you get an array of objects keyed by the headers.