How to Use Free Online JSON to CSV Converter Tool
Our free JSON to CSV converter tool provides instant conversion of JSON data to CSV format with advanced customization options. Simply paste your JSON data, configure conversion settings, and get properly formatted CSV output. No signup required, completely secure, and works offline.
Key Features
- Convert JSON arrays and objects to CSV format
- Customizable CSV delimiters (comma, semicolon, tab, pipe)
- Flexible quote character and escape character options
- Nested object flattening with configurable depth
- Array handling with indexing and flattening options
- Header row inclusion and customization
- Date format conversion (ISO, locale, timestamp)
- Data type detection and preview
- Completely secure - all processing happens in your browser
- Works offline after loading
Why Use This JSON to CSV Tool?
Perfect for data analysts, developers, and business users who need to convert API responses, database exports, or configuration files to spreadsheet format. Handle complex nested JSON structures, preserve data integrity, and get CSV files compatible with Excel, Google Sheets, and other tools.
Frequently Asked Questions
What JSON formats are supported?
Supports JSON arrays, objects, nested structures, and mixed data types with intelligent flattening.
How are nested objects handled?
Nested objects can be flattened using dot notation (object.property) or kept as JSON strings with configurable depth.
Can I customize CSV format?
Yes, you can customize delimiters, quote characters, escape characters, and header inclusion for any CSV standard.
How are arrays converted?
Arrays can be flattened with indexing, converted to multiple rows, or kept as JSON strings based on your preference.
What about large JSON files?
The tool efficiently handles large JSON files up to 10MB with real-time preview and progress indication.
Is my JSON data secure?
Completely secure. All conversion happens locally in your browser with no data transmission to external servers.