JSON to CSV Converter | Online Data Conversion

Convert complex JSON arrays and objects into standard CSV files instantly. Free online data format converter.

JSON Input

CSV Output

JSON to CSV Converter Tool

Convert complex JSON arrays and objects into a structured CSV format instantly. No server uploads—everything is processed securely in your browser.

Why use this tool?

  • Auto-flattening: Automatically flattens nested objects so you don't lose inner data in your CSV columns.
  • Array normalization: Extracts all unique keys across objects to ensure consistent column headers, even if some items are missing fields.
  • Client-Side Processing: Your JSON data is converted entirely in your browser using JavaScript. No data is ever sent to a server.
  • One-Click Download: Easily export your converted table into a `.csv` file compatible with Excel, Google Sheets, or data science tools.