JSON to Objective-C Converter

Class Name:

JSON Input

Objective-C Output

What is JSON to Objective-C Converter?

Need to generate Objective-C classes from your JSON (JavaScript Object Notation) data? This tool does that instantly. Perfect for Objective-C developers working with iOS, macOS, or legacy Apple applications who need to deserialize JSON into strongly-typed Objective-C objects. Generate classes, properties, and type definitions automatically.

According to Apple's documentation, NSJSONSerialization is the standard way to handle JSON in Objective-C. Our converter analyzes your JSON structure and generates proper Objective-C classes. First, validate your JSON using our JSON Validator, then convert it to Objective-C. You can also format your JSON with our JSON Formatter first if needed.

Everything happens in your browser – your JSON never leaves your computer. Convert, download, and use your Objective-C classes right away.

How to Use JSON to Objective-C

Follow these steps to convert JSON to Objective-C classes. Each step uses the actual buttons and panels on this page.

Paste, Upload, or Load Sample

Paste your JSON into the left JSON Input panel, or click Upload to load a .json or .txt file. Click Sample to see example JSON. Example input:

{"subscriberId":"SUB-1001","plan":"Unlimited 5G","dataUsage":45.2,"status":"active"}

Invalid JSON will show an error. Use our JSON Validator first if unsure. Configure class name in the options above.

View Generated Objective-C Output

The right Objective-C Output panel shows the generated classes instantly. JSON objects become classes with @property declarations.

Download or Copy

Click Download to save the Objective-C files, or Copy to copy to your clipboard. Use Clear on the input panel to start over. All processing runs in your browser.

When You'd Actually Use This

iOS Development

Generate Objective-C classes from JSON API responses for iOS apps. Create models for REST APIs or JSON-based configurations. Perfect for iOS applications using Objective-C.

macOS Development

Create Objective-C classes from JSON data for macOS apps. Generate data models for JSON-based APIs or configurations. Perfect for macOS application development.

Legacy Code Maintenance

Generate Objective-C classes from JSON data for legacy Apple applications. Create data models for JSON-based integrations or configurations. Perfect for maintaining older Objective-C projects.

Code Generation

Generate Objective-C code from JSON data structures. Perfect for creating data models, DTOs, or entity classes from JSON schemas or API responses.

Common Questions

Is my JSON data stored?

Nope. Everything happens right in your browser. Your JSON never leaves your computer – we don't even see it. Check out the ECMA-404 standard for more details.

How are JSON objects handled?

JSON objects become Objective-C classes. Properties become instance variables with @property declarations, and nested objects become nested classes or references. Arrays become NSArray. Check out the RFC 8259 for more details.

Can I use the generated Objective-C code?

Yes. The generated Objective-C code is valid and ready to use. Drop it into your Xcode project and start using it. You may want to review and refine the classes for your specific use case.

What about NSJSONSerialization?

The generated classes work perfectly with NSJSONSerialization. You can use NSJSONSerialization to convert JSON data into these Objective-C objects.

Does it work with large JSON files?

Yep. Since everything happens in your browser, it depends on your device. Small to medium JSON structures convert instantly. Really huge structures might take a few seconds.

What Objective-C version is supported?

The generated code works with Objective-C 2.0 and later. It uses modern Objective-C features like @property and follows Objective-C conventions for maximum compatibility.

Other JSON Tools You Might Need

Conversion is just one JSON task. Here are other tools that work well together: