JSON to CSV

The tool parses your JSON array and extracts all unique keys as CSV column headers. Each object in the array becomes a row. Nested objects are automatically flattened using dot notation (e.g., address.city).

The input should be a JSON array of objects, like [{...}, {...}]. Each object represents a row in the CSV output. If you paste a single object, it will be treated as a one-row table.

Nested objects are flattened using dot notation. For example, {"user": {"name": "John"}} becomes a column "user.name" with the value "John". Arrays are converted to comma-separated strings.

Yes! All processing happens entirely in your browser. Your JSON data is never sent to any server. No data is collected, stored, or transmitted.

Yes. Click the Download button to save the converted data as a .csv file. The file uses UTF-8 encoding with BOM for proper handling of special characters in spreadsheet applications.