JSON to CSV Converter

Convert JSON arrays to CSV format. All processing happens in your browser.

JSON Input
CSV Output

What is the JSON to CSV Converter?

The JSON to CSV Converter is a free online tool that turns JSON arrays into clean, comma-separated values (CSV) files ready for spreadsheets and databases. JSON is the standard data interchange format on the web, but most business and analytics tools, from Excel and Google Sheets to legacy reporting systems, still rely on CSV. This converter lets you move data from APIs, web services, and modern applications into tabular form without writing code. All processing happens entirely in your browser, so your data never leaves your machine. There is no sign-up, no upload to a remote server, and no limit on how many times you can use the tool.

When to Use the JSON to CSV Converter

Whenever you need to take structured JSON data and open it in a spreadsheet or feed it into a CSV-based pipeline, this tool provides the fastest path.

  • Exporting API response data into Excel or Google Sheets for analysis, reporting, or sharing with non-technical teammates.
  • Converting JSON logs or event data into CSV for import into business intelligence tools like Tableau or Power BI.
  • Preparing bulk-upload files for platforms that only accept CSV, such as e-commerce product catalogs or email marketing lists.
  • Flattening nested JSON structures into a flat table format that is easier to scan and filter.
  • Archiving JSON data in a universally readable format that can be opened on any computer without specialized software.
  • Quick data inspection when you want to view JSON records as sortable, filterable spreadsheet rows.

How It Works

Paste a JSON array into the input panel or upload a JSON file, and the tool parses it instantly using your browser's built-in JavaScript engine. It extracts all unique keys from the objects in the array to build the CSV header row, then maps each object to a corresponding data row. The generated CSV is displayed in the output area, properly escaped and formatted, ready to copy to your clipboard or download as a file. Because the entire conversion runs client-side, it works offline after the page loads, processes large datasets without server timeouts, and guarantees that sensitive data such as customer records or financial figures remains private on your device.