JSON to CSV Converter

What is it?

The JSON to CSV converter is a browser-based utility that transforms arrays of JSON objects into tabular Comma-Separated Values (CSV). It automatically flattens nested structures and extracts keys to use as column headers.

When should you use it?

Use this tool when you need to export NoSQL database dumps (like MongoDB) or REST API responses into a format suitable for spreadsheet applications like Microsoft Excel, Google Sheets, or traditional relational databases.

How does it work?

The tool iterates through the provided JSON array locally in your browser. It collects all unique top-level keys to generate the CSV header row. It then maps the corresponding values for each object, automatically escaping commas and quotes to ensure CSV compliance.

Example Input

[
  { "id": 1, "name": "Alice", "role": "admin" },
  { "id": 2, "name": "Bob", "role": "user" }
]

Example Output

id,name,role
1,"Alice","admin"
2,"Bob","user"

How to Use This Tool

1. Paste an array of JSON objects into the input panel.
2. The tool extracts all top-level keys to create CSV headers and maps the values into rows.
3. Download the resulting tabular data as a .csv file for Excel or Google Sheets.

Why use this offline converter?

Exporting JSON database dumps or API responses often involves sensitive user data. This browser-only converter guarantees your records are processed locally and never transmitted across the internet.