Utility Tools
JSON to CSV
Convert JSON to CSV online — fast, easy, and 100% free. Even deeply nested objects and arrays flatten automatically into readable columns, with a live table preview so you can check the result before you download.
- Handles nested JSON
- Live table preview
- Instant CSV download
Frequently asked questions
Can this convert nested JSON to CSV?
Yes, nested objects and arrays are flattened automatically into readable columns, and you can preview the table before downloading the CSV.
Does converting JSON to CSV here upload my data?
No, the conversion runs entirely in your browser, so your JSON file never leaves your device or touches a server.
Is there a limit to how large a JSON file I can convert?
No fixed limit, but very large files take longer to flatten since the conversion runs on your device rather than a server.
What happens to arrays inside my JSON when converting to CSV?
Arrays are flattened into their own indexed columns so each value still has a place in the resulting table.
Can I edit the table before downloading the CSV?
The live preview shows exactly what will export, so check it carefully since there's no in-tool cell editing before download.
What if my JSON file has invalid syntax?
The tool flags a parsing error instead of producing a broken CSV, so fix the JSON first and try again.