JSON → CSV / Excel Converter
Drag & drop JSON and export it to CSV or Excel — with automatic flattening of nested objects. Runs entirely in your browser, so your data never leaves your device.
Input JSON
Preview
Your converted table preview will appear here.
Frequently asked questions
Is the JSON to CSV converter free?
Yes — completely free, with no account, no row limits and no watermarks.
Is my data uploaded to a server?
No. Everything runs locally in your browser, so your JSON never leaves your device.
Can it convert JSON to Excel?
Yes. You can export to CSV or a real .xlsx Excel file that opens in Excel, Numbers or Google Sheets without any format warnings.
Does it handle nested JSON objects and arrays?
Yes. Turn on “Flatten nested objects” to convert nested fields into dotted columns like address.city, and arrays into indexed columns like tags.0, tags.1.
Does it work offline?
Once the page has loaded, the conversion runs entirely on your device and works without an internet connection.