Is CSV ↔ JSON Converter free?

Yes, CSV ↔ JSON Converter is completely free to use with no signup required.

Does CSV ↔ JSON Converter send my data to a server?

No. CSV ↔ JSON Converter runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

Convert CSV to JSON and JSON to CSV. Unflatten nested properties or flatten complex JSON structures instantly. No server uploads.

DevTab

Never leaves your browser

Convert CSV to JSON and JSON to CSV bidirectionally with support for nested object flattening.

CSV Input

JSON Output

Conversion Successful164 B4 lines