JSON to CSV

The Fastest Local JSON to CSV Converter

Stop uploading sensitive company data to third-party servers! Our JSON to CSV tool runs entirely in your browser locally, leveraging modern JS engines to convert thousands of rows instantly.

How to convert JSON array to CSV format?

Using our local converter is incredibly simple. Just paste your JSON object array into the left text editor. Our intelligent parser will automatically scan all objects to detect and extract all possible keys, using them as the CSV column headers. Then, it maps the corresponding values for each row. You can immediately preview the result in a sortable data table, or click the Export CSV button to instantly download the spreadsheet to your local machine.

Handling Nested JSON Objects and Arrays

One of the most complex challenges in converting JSON to CSV is dealing with nested data structures. Our advanced conversion engine automatically flattens nested objects into dot-notated column names (e.g., user.address.city) and intelligently stringifies nested arrays so they fit perfectly into a single CSV cell without breaking the row alignment.