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Online JSON to CSV Converter

Transform nested or tabular JSON datasets into clean, spreadsheet-ready CSV files with custom delimiters and automatic key flattening.

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Enter JSON (Array of Objects or Single Object)

[
  {"id": 101, "name": "Cloudflare Edge", "region": "Global", "latency_ms": 12, "status": "active"},
  {"id": 102, "name": "Vercel Functions", "region": "US-East", "latency_ms": 28, "status": "active"},
  {"id": 103, "name": "AWS Lambda", "region": "EU-Central", "latency_ms": 35, "status": "active"}
]

Converted CSV Output

Options:

Delimiter:

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How to Convert JSON to CSV Without Leaking Sensitive Data

JavaScript Object Notation (JSON) is the universal format for API communications and modern web databases like MongoDB and Firebase. However, data analysts, marketers, and business stakeholders almost exclusively work with tabular data in Microsoft Excel or Google Sheets.

This client-side JSON to CSV utility parses raw JSON strings or uploaded files, detects all unique keys across objects, properly quotes strings containing commas or line breaks, and exports high-performance RFC 4180 CSV files.

Frequently Asked Questions

Is my JSON data uploaded to any external server?

No. All JSON to CSV conversion is performed entirely on your machine using your browser's local JavaScript engine. Your data never leaves your computer.

Does this converter support nested JSON objects?

Yes. Nested properties are automatically flattened into dot notation headers (e.g., user.address.city) so you never lose data hierarchy.

Can I import the generated CSV into Microsoft Excel or Google Sheets?

Absolutely. The CSV output complies strictly with RFC 4180 specifications, making it 100% compatible with Excel, Google Sheets, LibreOffice, and Pandas.

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