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JSON to CSV Converter

Convert JSON arrays to CSV format online. Handles nested objects, custom delimiters, and CSV download.

What Is JSON to CSV Conversion?

JSON to CSV conversion transforms structured JSON data into comma-separated values (CSV) format, which is widely used in spreadsheets, databases, and data analysis tools. This tool handles nested JSON objects by flattening them with dot notation, supports custom delimiters, and allows you to download the result as a .csv file.

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FAQ

How do I convert JSON to CSV online?
Paste your JSON array in the input field. The tool automatically detects column headers from object keys, flattens nested objects, and generates a downloadable CSV file with proper quoting and escaping.
Can I convert nested JSON to CSV?
Yes, the converter flattens nested objects using dot notation. For example, {"user": {"name": "John"}} becomes a column named 'user.name' with value 'John'. Arrays are joined with commas.
What JSON format does the converter expect?
The input should be a JSON array of objects, like [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}]. Each object becomes a CSV row, and unique keys across all objects become columns.
How do I handle special characters in CSV output?
The tool automatically handles CSV escaping: values containing commas, quotes, or newlines are wrapped in double quotes. Existing double quotes are escaped by doubling them ("").