JSON Input

Rust Output

What is JSON to Rust Converter?

Need to generate Rust structs from your JSON (JavaScript Object Notation) data? This tool does that instantly. Perfect for Rust developers who need to deserialize JSON into strongly-typed Rust structs. Generate model structs with proper types, Serde integration, Option types for nullable fields, and Rust best practices automatically.

According to Rust documentation, Serde is the most widely used Rust serialization framework. Our converter analyzes your JSON structure and generates proper Rust structs with Serde derive macros, Option types for nullable values, and snake_case field naming. First, validate your JSON using our JSON Validator, then convert it to Rust. 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 Rust structs right away in your Rust projects.

How to Use JSON to Rust

Follow these steps to convert JSON to Rust structs. 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 struct name, enable Serde, and choose Option types in the options above.

View Generated Rust Output

The right Rust Output panel shows the generated Rust structs instantly. Each nested object becomes its own struct. Fields use snake_case naming (Rust convention). Serde derive macros are included for easy serialization/deserialization. The generator validates your JSON – if it's valid, it generates Rust code; if not, you'll see an error.

Copy, Download, or Adjust

Click Copy to copy the Rust code to your clipboard. Click Download to save as a .rs file. Need different options? Toggle Serde, enable Option types for nullable fields, and see the output update instantly. Use Clear to start fresh.

Common Questions

Is my JSON data stored?

No. All code generation happens in your browser using JavaScript. Your JSON data never leaves your computer.

What Rust versions are supported?

Our converter generates code compatible with Rust 1.56+. The generated code uses modern Rust conventions with Serde derives and proper Option type handling.

Do I need to add Serde to my project?

If you enable Serde in the options, you'll need to add serde and serde_json to your Cargo.toml. Enable the "derive" feature for serde. The generated code includes the necessary derive macros and imports.

What are Option types?

Option in Rust represents a value that may or may not be present. Enable "Option Types" to wrap optional JSON fields in Option, which is recommended for real-world JSON that may contain null values.

How are field names handled?

JSON field names are automatically converted to snake_case, which is the Rust convention. If a JSON field doesn't need renaming, the struct field is used directly. Serde #[serde(rename)] attributes are added when needed.

Can I use this for web services?

Absolutely. This tool is perfect for web services using frameworks like Actix, Rocket, or Axum. The generated structs work seamlessly with these frameworks for request/response handling.

Other JSON Tools You Might Need

Converting to Rust is just one JSON task. Here are other tools that work well together: