Free JSON to CSV Converter Online
Convert JSON to CSV instantly with our free online tool. Transform JSON data, arrays, and files to CSV format with syntax highlighting and auto-fix. No signup required.
JSON Input
CSV Output
How to Use
Paste or Upload JSON
Enter your JSON array or upload a .json file
Configure Options
Choose delimiter, headers, and flattening preferences
Convert
Click convert to transform JSON to CSV instantly
Copy or Download
Copy to clipboard or download as .csv file
Fast & Accurate
Instant conversion with proper CSV escaping and formatting
Nested Object Support
Flatten nested JSON objects into CSV columns automatically
Privacy First
All processing happens in your browser. No data is sent to servers
Frequently Asked Questions
What JSON format is supported?
The converter expects a JSON array of objects. Each object represents a row, and the keys become column headers.
How are nested objects handled?
Enable "Flatten Nested Objects" to convert nested structures into dot-notation columns (e.g., "address.city").
Is my data secure?
Yes! All conversion happens locally in your browser. Your data never leaves your device.
What delimiters are supported?
You can choose from comma, semicolon, tab, or pipe delimiters to match your requirements.