JSON to CSV Converter

Flatten complex JSON data into clean CSV spreadsheet format, ready for analysis or import.

100% Browser-Based

Files Never Leave Your Device

No Server Uploads

Zero Data Collection

How It Works

Upload your JSON file or paste JSON data

Nested objects and arrays are automatically flattened

Click "Convert to CSV" to transform your data

Download the CSV file or copy the output

Handles nested JSON objects with dot-notation flattening

Array handling with intelligent expansion

Preserves all data types in CSV output

Clean header generation from JSON keys

Works entirely in your browser for maximum privacy

How are nested JSON objects handled?

Nested objects are flattened using dot notation (e.g., "address.city"). Arrays are expanded into separate columns or rows depending on structure.

Can I convert JSON arrays?

Yes, JSON arrays of objects are converted to rows, with object keys becoming column headers.