BROWSER-ONLY TOOL

JSON ↔ CSV Converter

Convert JSON and CSV. Nested mode flattens object properties; relational export creates linked tables from arrays.

About this tool

Convert JSON to CSV, flatten nested objects, or export related arrays as multiple Excel sheets or CSV files. Browser-based.

Example: {"id":101,"address":{"city":"Seattle"},"orders":[{"orderId":"A771"}]}

Processing runs locally in your browser. JavaScript is required for interactive conversion.