Convert JSON to CSV

Transform complex JSON structures into clean, downloadable CSV tables. Perfect for data analysis and spreadsheets.

JSON Input

JSON

Delimiter

Client-side

CSV Output

CSV

How to Convert JSON to CSV?

Paste your JSON data into the left input editor or upload a file.
Select your preferred delimiter (Comma, Tab, or Semicolon) from the options.
Click the Convert button in the center.
Review the generated CSV in the right editor.
Click Copy to use the data immediately or Download to save as a .csv file.

Flattening JSON Data

Handling Nested Objects

Our tool automatically flattens nested JSON objects using dot notation (e.g., address.city) for column headers. This preserves the hierarchical structure of your data while making it compatible with flat table formats.

Handling Arrays

Arrays within your JSON are expanded using index notation (e.g., tags/0, tags/1). This ensures that every piece of data is captured without loss during the conversion process.

Example Transformation

Input JSON

{ "id": 101, "user": { "name": "Alice", "role": "Admin" }, "skills": ["Python", "SQL"]
}

Output CSV

id,user.name,user.role,skills/0,skills/1
101,Alice,Admin,Python,SQL

Key Features

Lightning Fast

Conversion happens instantly in your browser using pure JavaScript. No server latency.

100% Secure

Your data never leaves your device. We respect your privacy—no data is sent to any server.

Developer Friendly

Supports JSON5 (single quotes, unquoted keys) and handles complex nested structures effortlessly.

Frequently Asked Questions

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. It is widely used for APIs and configuration files.

CSV (Comma Separated Values) is the standard format for spreadsheets. Converting JSON to CSV allows you to open your data in Microsoft Excel, Google Sheets, or LibreOffice Calc for analysis, sorting, and charting.

Since the conversion is client-side, the limit depends on your browser's memory. For most modern devices, you can process files up to several megabytes efficiently.