JSON to CSV

JSON → CSV, header-aware

JSON input

CSV output

Output will appear here

More browser-only tools, free and no upload.

Questions

Is JSON to CSV free?
Yes. JSON to CSV is completely free, with no account, no sign-up, and no usage limits. It runs entirely in your browser.
Do my files get uploaded when I use JSON to CSV?
No. JSON to CSV processes everything on your device, so your files and text never leave your browser. You can verify it yourself: open your browser's Network tab and you'll see no uploads.
How do I use JSON to CSV?
Open JSON to CSV in your browser, no install or sign-up needed, then paste, type, or drop in your input and the result appears instantly. Convert JSON arrays to CSV. Handles array-of-objects and array-of-arrays, auto-unions keys across sparse objects, configurable delimiter, proper RFC 4180 quoting. Browser-only.
Is there a file size limit in JSON to CSV?
There's no hard file or text size limit. Because JSON to CSV runs locally in your browser, the only ceiling is your device's available memory, and everyday files process instantly.