JSON to C++ Converter
Convert JSON to C++ structs and classes for C++ development
JSON Input
C++ Output
What is JSON to C++ Converter?
Need to generate C++ structs and classes from your JSON (JavaScript Object Notation) data? This tool does that instantly. Perfect for C++ developers working with embedded systems, game development, or high-performance applications who need to deserialize JSON into strongly-typed C++ structures. Generate structs, classes, and type definitions automatically.
According to C++ reference, structs and classes are essential for JSON processing in C++. Our converter analyzes your JSON structure and generates proper C++ code. First, validate your JSON using our JSON Validator, then convert it to 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 C++ code right away.
What Makes This Tool Different
Automatic Struct Generation
We analyze your JSON structure and automatically generate C++ structs or classes. JSON objects become structs, arrays become vectors, everything gets proper C++ types.
Namespace Support
Configure namespaces to match your project structure. Generate code that fits seamlessly into your existing C++ project organization.
STL Containers
Arrays become std::vector, nested objects become nested structs. Uses standard C++ containers for maximum compatibility.
File Upload Support
Got a big file? Just upload it. Works great for converting those massive JSON configs or data files without copy-pasting.
Download C++
One click to download your C++ file. Drop it into your C++ project and start using it. Perfect for embedded systems, game development, or high-performance applications.
Clean Code Output
The generated C++ code is clean and well-formatted. Structs are properly named, fields are typed correctly, and the code follows C++ conventions.
How It Works
Paste or Upload JSON
Paste your JSON into the left editor, or click "Upload" to load a file. The JSON should be valid – use our JSON Validator first if you're not sure. You can also click "Sample" to see an example.
Configure Options
Set your struct name and choose whether to use namespaces. These settings customize the generated C++ code to match your project's conventions.
Download or Copy
Click "Download" to save the C++ file, or "Copy" to copy it to your clipboard. The C++ code is ready to use in your project. Drop it into your C++ project and start using it.
When You'd Actually Use This
Game Development
Generate C++ structs from JSON configs for game development. Create data models for JSON-based game configurations or save files. Perfect for C++ game engines.
Embedded Systems
Create C++ structs from JSON data for embedded systems. Generate data models for JSON-based configurations or APIs. Perfect for embedded C++ development.
High-Performance Applications
Generate C++ structs from JSON data for high-performance applications. Create data models for JSON-based APIs or configurations. Perfect for performance-critical C++ code.
Code Generation
Generate C++ code from JSON data structures. Perfect for creating data models, DTOs, or entity structs 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.
How are JSON objects handled?
JSON objects become C++ structs. Properties become struct members, and nested objects become nested structs or references. Arrays become std::vector.
Can I use the generated C++ code?
Yes. The generated C++ code is valid and ready to use. Drop it into your C++ project and start using it. You may want to review and refine the structs for your specific use case.
What about namespaces?
You can enable namespaces in the configuration options. This generates C++ code with namespaces for better code organization.
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 C++ standard is supported?
The generated code works with C++11 and later. It uses standard C++ features and STL containers for maximum compatibility.
Other JSON Tools You Might Need
Conversion is just one JSON task. Here are other tools that work well together:
Need to learn more about JSON? Check out the official JSON.org website or the comprehensive guide on MDN. For C++, check out cppreference.com.