Utilz
JSON to CSV Converter
Convert JSON data to CSV format with table preview
Want to learn more? Read our guide: JSON Tools Guide for Developers
Why Use This Tool?
- Convert JSON arrays to CSV format instantly with automatic nested object flattening.
- Preview your data as a table before downloading the CSV file.
- All processing happens in your browser -- your data stays on your device.
How to Use
- Paste your JSON array into the input area
- Preview the parsed data as a table
- Click Download CSV to save the file
FAQ
What JSON format is supported?
The converter accepts a JSON array of objects (e.g., [{...}, {...}]). Each object becomes a row. Nested objects are flattened using dot notation (e.g., "address.city").
How are nested JSON objects handled?
Nested objects are automatically flattened with dot notation. For example, {"user": {"name": "John"}} becomes a column "user.name" with value "John".
Is there a file size limit?
Processing happens entirely in your browser, so there is no server-side limit. However, very large files (over 50MB) may slow down your browser.
How are arrays inside JSON objects handled?
Array values are joined with a semicolon delimiter and placed in a single CSV cell. For example, ["a", "b", "c"] becomes "a;b;c" in the output.
How are nested JSON objects handled in CSV conversion?
Nested objects are flattened using dot notation for column headers. For example, {"user": {"name": "John"}} becomes a column named "user.name" with value "John".