JSON to CSV
Convert JSON data to CSV format with advanced mapping and formatting
JSON Input
CSV Output
Frequently Asked Questions
Common questions about JSON to CSV conversion
How does JSON to CSV conversion work?
The tool flattens JSON objects into rows and columns. Each object becomes a row, each key becomes a column header. Nested objects are flattened using dot notation (e.g., address.city). Arrays are handled based on your configuration settings.
What JSON structures convert best to CSV?
Arrays of flat objects with consistent keys work best — like API response data or database exports. Deeply nested or inconsistent structures still convert, but may need the flattening options to produce clean columnar output.
How are nested objects handled?
Nested objects are flattened using dot notation. For example, {"user": {"name": "John"}} becomes a column header 'user.name' with value 'John'. You can configure the separator and maximum nesting depth.
Can I open the CSV in Excel?
Yes. The output is standard CSV format compatible with Excel, Google Sheets, LibreOffice Calc, and any data analysis tool. Special characters and commas within values are properly quoted to prevent column misalignment.
Is my data processed privately?
All conversion happens locally in your browser. No data is uploaded to any server. This is safe for converting JSON containing personal data, financial records, or any sensitive information.
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