How do I convert JSON to CSV online safely?

Paste your JSON array above; conversion runs 100% locally in your browser so sensitive data never leaves your device.

Does this support nested JSON keys?

Yes, nested objects are automatically flattened with dot notation into CSV columns.

100% Client-Side • Zero Data Leaves Browser

Convert JSON to CSV, format SQL, decode JWT tokens, and encode Base64 or URLs instantly in your browser. 100% client-side privacy.

Active Converter / Utility

Input Data Upload File

Output Result