JSON to CSV Converter
Convert JSON data to CSV format instantly. 100% client-side processing — your data never leaves your browser.
Privacy & Security: This tool is for personal use. Your data is not processed and is never sent to any server. All processing happens client-side in your browser.
Disclaimer: This tool is provided as-is. Please verify the output before using it in production systems.
About JSON to CSV Converter
JSON (JavaScript Object Notation) is great for APIs and data exchange, but sometimes you need your data in CSV (Comma-Separated Values) format for spreadsheets, databases, or data analysis tools. This free online tool converts your JSON data to CSV format instantly without uploading anything to a server.
How to Use
- Paste your JSON data into the input area, or upload a JSON file.
- Configure options: choose your output delimiter, flatten nested objects, and include/exclude headers.
- Click Convert to CSV to transform your data.
- Copy the result to your clipboard or download it as a .csv file.
Frequently Asked Questions
Is my JSON data kept private?
Absolutely. All conversion happens entirely in your browser using JavaScript. No data is sent to any server, logged, or stored anywhere. You can safely use this tool with sensitive data.
Can I convert nested JSON objects?
Yes, the tool can flatten nested JSON objects. When the "Flatten nested objects" option is enabled, nested properties are converted to dot-notation column names (e.g., "user.name" becomes a column).
What if my JSON is not an array?
The tool expects an array of objects as input. If your JSON is a single object, it will be treated as a single-row CSV. If your JSON has a different structure, you may need to preprocess it.
Can I convert CSV back to JSON?
Yes! Check out our CSV to JSON Converter tool for the reverse operation.
Are there any limits?
The tool can handle JSON files up to 10MB. For very large datasets, consider processing them in chunks or using a dedicated data processing tool.