JSON to CSV Converter That Handles Nested Objects

Converting JSON to CSV should be simple. Most tools choke on nested objects. Mine flattens them.

Example

Input:

[
  { "name": "Alice", "address": { "city": "NYC", "zip": "10001" } },
  { "name": "Bob", "address": { "city": "LA", "zip": "90001" } }
]

Output:

name,address.city,address.zip
Alice,NYC,10001
Bob,LA,90001

Nested objects get dot-notation column names. Clean and predictable.

Features

• Paste any JSON array
• Automatic column detection
• Nested object flattening
• Proper CSV escaping (commas, quotes, newlines)
• Download as .csv file
• Copy to clipboard
• Sample data to test with

JSON to CSV Converter

Runs in your browser. Your data stays local.

More converters:

• YAML to JSON
• JSON to TypeScript
• SQL to MongoDB

Full toolkit: devtools-site-delta.vercel.app