Input
Output
JSON to CSV Converter
Convert between JSON and CSV formats instantly with our powerful, browser-based 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 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/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.
Key capabilities
- JSON to CSV: Convert JSON arrays and objects to CSV format with proper header generation and nested data handling.
- CSV to JSON: Convert CSV files to JSON arrays with automatic type detection and proper structure.
- Bidirectional: Easily switch between formats with a single click using the swap button.
- Nested data: Handles complex nested objects and arrays by flattening or preserving structure as needed.
Privacy & reliability
Just like our other formatters, the JSON/CSV converter experience is completely local—no uploads, no external APIs, no telemetry. Your data never leaves your machine, making it safe for sensitive data, confidential exports, or private information.
Robust conversion provides accurate transformations so you can confidently convert between formats without data loss.
Quick how-to
- Paste or upload JSON or CSV data into the input editor.
- Click JSON to CSV or CSV to JSON to convert.
- Use the Swap button to exchange input and output.
- Copy, download, or save the converted output.