JSON to CSV Converter
Convert between JSON and CSV formats instantly. Upload files or paste data, handle nested objects with ease, preview results in table format, and download converted files. 100% free and private.
Input (JSON)
Output (CSV)
Output will appear here after conversion
Bidirectional Conversion
Convert JSON to CSV or CSV to JSON with a single click. Supports both conversion directions seamlessly.
Nested Object Support
Handle nested JSON objects by flattening, skipping, or converting to strings. Full control over complex data structures.
Table Preview
Preview your data in a clean table format before downloading. See exactly what your output will look like.
Frequently Asked Questions
How do I convert JSON to CSV?
Upload a JSON file or paste your JSON data into the input field. Configure your delimiter and nested object handling options, then click "Convert to CSV". You can preview the table and download the CSV file.
How does the tool handle nested JSON objects?
You have three options for handling nested objects: Flatten creates columns like "address.city" and "address.zip", Skip ignores nested objects completely, and Stringify converts objects to JSON strings within CSV cells.
Can I convert CSV back to JSON?
Yes! Simply toggle the conversion mode to "CSV to JSON", upload or paste your CSV data, configure if your CSV has headers, and click convert. The tool will create a properly formatted JSON array.
What delimiters are supported?
We support comma (,), semicolon (;), and tab (\t) delimiters. Choose the delimiter that matches your CSV file or desired output format.
How does the tool handle special characters in CSV?
The tool properly escapes values containing delimiters, quotes, or newlines by wrapping them in double quotes. Internal quotes are escaped by doubling them (""), following standard CSV conventions.
Is my data safe?
Absolutely. All conversion happens entirely in your browser using JavaScript. Your data never gets sent to any server, ensuring complete privacy and security. You can even use this tool offline once the page is loaded.
What's the maximum file size?
There's no hard limit imposed by the tool. It can handle large files since all processing happens in your browser. However, very large files (100MB+) may take longer to process depending on your device's capabilities.
Can I use this tool for data migration?
Yes! This tool is perfect for migrating data between systems that use different formats. Convert JSON from APIs to CSV for Excel, or CSV exports to JSON for web applications.