Question 1

How do I convert a JSON file to CSV?

Accepted Answer

Upload your .json file or paste JSON data directly. The tool flattens the JSON structure and creates a CSV with object keys as column headers and values as row data. Download the result as a .csv file.

Question 2

What JSON structures are supported?

Accepted Answer

The tool works best with an array of flat objects (the most common API response format). Nested objects are flattened using dot notation (e.g., 'address.city'). Arrays within objects are joined into single cell values.

Question 3

Can I convert nested JSON to CSV?

Accepted Answer

Yes. Nested properties are flattened into column headers using dot notation. For example, {"user": {"name": "Sam"}} becomes a column called 'user.name' with value 'Sam'. Deeply nested structures are fully expanded.

Question 4

What happens to JSON arrays inside objects?

Accepted Answer

Array values within an object are converted to a comma-separated string in the CSV cell. For example, {"tags": ["a", "b"]} would appear as 'a,b' in the tags column. This keeps the CSV flat and compatible with spreadsheets.

JSON to CSV Converter

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