JSON to CSV Converter

Convert JSON to CSV

How It Works

This converter transforms JSON arrays into CSV (Comma-Separated Values) format. It handles:

• Array of objects: Keys become headers, values become rows
• Array of arrays: First array can be used as headers
• Nested objects: Flatten with dot notation or stringify as JSON
• Special characters: Values with commas, quotes, or newlines are properly escaped

Supported JSON Formats

Array of Objects (most common):

[
  { "name": "John", "age": 30 },
  { "name": "Jane", "age": 25 }
]

Array of Arrays:

[
  ["name", "age"],
  ["John", 30],
  ["Jane", 25]
]

CSV Escaping Rules

Frequently Asked Questions

What JSON formats are supported?

The converter works with arrays of objects (most common for API data) and arrays of arrays. Single objects are not supported—wrap them in an array first.

How are nested objects handled?

You have three options: Stringify converts nested objects to JSON strings, Flatten creates columns like address.city, and Skip ignores nested fields entirely.

Will this work with large files?

Yes, the conversion happens entirely in your browser. For very large files (10MB+), you may experience a brief delay, but your data never leaves your device.

How do I open the CSV in Excel?

Click "Download" to save the CSV file, then open it in Excel. If you're in a region that uses semicolons as delimiters, select "Semicolon" before converting.

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JSON to CSV Converter FAQ