JSON to CSV Converter

How to convert JSON to CSV online

This tool operates as a versatile json to csv and json csv converter. Paste a JSON array of objects into the input field. Each object becomes one row, and the union of all keys across every object becomes the column headers. Missing values in a row are left as empty cells. Click Convert to generate the CSV, then copy to clipboard or download as a .csv file.

Handling nested objects and arrays with JSON CSV CONVERTER

CSV is a flat format - it cannot represent nested structures natively. When a value is a nested object or array, this tool serializes it as a JSON string within the cell. For truly flat data, consider flattening your JSON before conversion, or use the JSON Formatter tool to inspect the structure first.

Why all headers are detected from every row

Real-world API responses often have sparse objects where different rows contain different keys. This converter collects headers from all rows - not just the first - so no columns are silently dropped. Empty cells are filled in for rows that do not have a particular key.