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JSON-Arch

Free Online JSON to CSV Converter

Transform JSON arrays and objects into CSV tabular format for Microsoft Excel, Google Sheets, or data analysis pipelines.

Target Language:
JSON Source Payload
csv Output

Automatic Nested Object Flattening

When converting complex API responses to CSV, nested data models pose a structural challenge. Our converter uses recursive dot-notation flattening:

Input JSON Payload
[
  {
    "id": 1,
    "user": { "name": "Alice", "city": "Delhi" }
  }
]
Flattened CSV Output
id,user.name,user.city
1,"Alice","Delhi"

Frequently Asked Questions

How does the JSON to CSV conversion process work?

The converter inspects your JSON array of objects, extracts unique key names across all entries to form CSV table headers, and maps each object property into a corresponding row cell.

How are nested JSON objects converted to CSV columns?

Nested child objects are automatically flattened using dot notation (e.g. user.address.city). Arrays of primitives are joined into comma-separated strings.

Can I open the generated CSV in Microsoft Excel or Google Sheets?

Yes! The exported CSV includes UTF-8 encoding and standard comma delimiters, making it instantly compatible with Excel, Google Sheets, Apple Numbers, and pandas DataFrames.

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