JSON to CSV Converter
Free online JSON to CSV converter. Transform JSON arrays into CSV format with automatic column detection and nested object flattening.
JSON Input
CSV Output
About JSON to CSV Converter
Free online JSON to CSV converter. Transform JSON arrays into CSV format with automatic column detection and nested object flattening. All processing happens entirely in your browser — your data is never sent to any server.
Frequently Asked Questions
What JSON formats are supported?▼
The converter expects a JSON array of objects. Each object becomes a row in the CSV, and the keys become column headers. Nested objects are flattened using dot notation (e.g., 'address.city').
Can I convert nested JSON?▼
Yes, nested objects are automatically flattened. For example, {"user": {"name": "John"}} becomes a column header 'user.name' with value 'John'.