FreeDev Tools

JSON to CSV Converter

Convert JSON arrays to CSV and flatten nested objects automatically.

This converter transforms JSON arrays into CSV format. Nested objects are flattened using dot notation (for example, user.name) so your output remains tabular and easy to export.

Frequently Asked Questions

Can this handle nested JSON? +

Yes, nested objects are flattened into dot-notation columns such as user.name when the flatten option is enabled.

What JSON structure is supported? +

Input should be a JSON array of objects for best CSV conversion results. Each object becomes a row.

Can I download the CSV output? +

Yes, use the download button to save the converted CSV file directly to your device.

Is my data private? +

Yes, all conversion happens in your browser. No data is sent to any server.

Frequently Asked Questions

The input should be a JSON array of objects, e.g. [{"name":"Alice","age":30},{"name":"Bob","age":25}]. Each object becomes a CSV row.