JSON to CSV Converter
Convert JSON to CSV online. Flattens nested objects with dot notation, handles arrays, custom delimiters, and header toggle. Everything runs in your browser.
JSON input (array, object, or JSON-lines)
CSV — 2 rows × 5 cols
How to use
- Paste a JSON array, object, or JSON lines.
- Pick delimiter and header toggle.
- Copy or download data.csv.
FAQ
How are nested objects handled?
Nested keys are flattened with dot notation: {"a":{"b":1}} becomes column a.b.
Does it support JSON lines?
Yes. If the input is not one JSON document, each line is tried as its own JSON object.