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Free Online JSON to CSV Converter
Convert between JSON and CSV formats instantly with our powerful, browser-based JSON to CSV converter. Designed with developers and data engineers in mind, this tool delivers lightning-fast conversion, proper handling of nested data, and 100% client-side processing to keep your data secure. Whether you're converting API responses to spreadsheets, transforming data exports, or migrating between formats, the JSON to CSV converter handles everything smoothly without slowing down your machine.
Built on the same high-performance core as our industry-leading formatters, the JSON/CSV converter ensures precise conversion, proper handling of nested objects and arrays, and automatic flattening of complex structures. It's perfect for exporting JSON data to Excel, importing CSV into applications, or transforming data between formats.
With support for bidirectional conversion, copy/paste input, file uploads, and instant transformation, this JSON to CSV converter becomes an essential part of any developer's workflow. No installations, no backend requests, no data tracking — just fast, secure, and reliable format conversion right from your browser.
Optimize your productivity with a clean UI, blazing performance, and robust conversion capabilities — built to handle even the most complex data structures with ease. Whether you need to convert large JSON datasets or prepare CSV files for reporting tools, this free online JSON to CSV converter is the fastest and most reliable solution available.
Key Capabilities of the JSON to CSV Converter
- JSON to CSV conversion: Convert JSON arrays and objects to clean CSV format with proper header generation and smart handling of nested data.
- CSV to JSON conversion: Transform CSV files back into structured JSON arrays with automatic type detection.
- Bidirectional support: Switch between JSON and CSV formats instantly with the swap button.
- Nested data handling: Automatically flattens or preserves complex nested objects and arrays.
- Large file support: Handles big JSON and CSV files quickly with no performance issues.
- 100% client-side: All processing happens in your browser — no data ever leaves your device.
Privacy & Reliability
Just like all tools on jsonformatter.gg, the JSON to CSV converter runs completely locally in your browser — no uploads, no external APIs, no telemetry. Your data never leaves your machine, making it safe for sensitive data, confidential exports, or private business information.
Every conversion is accurate and lossless, so you can confidently use the output in production workflows without worrying about data corruption or formatting errors.
How to Use the JSON to CSV Converter
- Paste your JSON or CSV data into the input editor or upload a .json / .csv file.
- Select the direction: JSON to CSV or CSV to JSON.
- Click the Convert button — results appear instantly.
- Use the Swap button to exchange input and output.
- Copy the result, download as a file, or clear the editor to start over.