JSON to CSV Converter
Paste a JSON array of objects to convert it to CSV format. The tool automatically extracts headers from object keys and flattens nested structures. Useful for data export, spreadsheet preparation, or converting API responses into formats that work with Excel or Google Sheets.
What this tool checks
- Automatic header extraction from JSON keys
- Nested object flattening
- Custom delimiter support
- Downloadable CSV output
Automate this with the API
Run this tool programmatically from your code. Get a free temporary API key with 200 requests — or register for unlimited access.
curl https://apixies.io/api/v1/json-to-csv?data=... \
-H "X-API-Key: YOUR_API_KEY"
Frequently asked questions
How does it handle nested JSON objects?
Nested objects are flattened using dot notation. For example, {"address": {"city": "NYC"}} becomes a column named "address.city" with value "NYC".
What if my JSON objects have different keys?
The CSV will include columns for all unique keys across all objects. Objects missing a key will have an empty value in that column.
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