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JSON to Rust Struct Converter

JSON to Rust Struct Converter

Convert JSON data into memory-safe Rust struct definitions with Serde #[derive(Serialize, Deserialize)] macros and Option<T> types.

Root Struct Name:
Derive Serde (Serialize, Deserialize):
Public Structs & Fields (pub):
Valid Syntax

Quick Answer & Understanding Your Result

Source: The Rust Programming Language Book

A JSON to Rust Struct Converter transforms JSON data into strongly typed, memory-safe Rust struct definitions, pre-configured with Serde serialization derive macros.

Core Rust Code Generation Features

  • Serde Derive Macros: Pre-decorates all structs with #[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)].
  • Snake_Case & Rename Attributes: Formats field names into idiomatic Rust snake_case with #[serde(rename = "key")] attributes.
  • Option<T> & Nullable Handling: Wraps nullable fields in Option<T> and heterogenous lists in enums.

Systems & Backend Applications

  • Actix-web / Axum / Rocket Handlers: Typing JSON request and response models in high-performance web services.
  • WASM & CLI Tools: Modeling structured configuration and API responses in Rust binaries.

Paste your JSON payload above to generate compile-ready Rust struct code instantly.

Formula & Calculation Logic

Technical Specification & AST
Mathematical Formula
Rust Struct
= "#[derive(Serialize, Deserialize)]npub struct " + StructName + " ... "

Rust type synthesis:

  • Maps JSON strings to String, numbers to i64 / f64, booleans to bool, arrays to Vec<T>, and objects to nested structs.

Step-by-Step Guide

1

Paste JSON Payload

Paste raw JSON data into the editor.

2

Set Struct Name

Enter target Rust struct identifier (e.g. `User` or `Config`).

3

Copy Serde Struct Code

Copy generated Rust code directly into your Rust crate modules.

Worked Examples Table

ExampleInput ValuesCalculated ResultExplanation
User JSON to Rust Struct
Root Name: User, Json: { "user_id": 10824, "username": "rustacean_pro", "is_active": true, "account_balance": 1540.75, "server_endpoints": [ "https://api.fnct.net/v1", "https://backup.fnct.net" ], "metadata": { "created_at": "2026-08-19T00:00:00Z", "ip_address": "192.168.1.1", "login_count": 42 } }, Use Serde: true, Make Public: true
use serde::{Serialize, Deserialize}; #[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)] #[serde(rename_all = "camelCase")] pub struct User { pub user_id: i64, pub username: String, }
Generated Serde-decorated Rust struct with camelCase renaming.
User Account & Endpoints
Json: { "user_id": 10824, "username": "rustacean_pro", "is_active": true, "account_balance": 1540.75, "server_endpoints": [ "https://api.fnct.net/v1", "https://backup.fnct.net" ], "metadata": { "created_at": "2026-08-19T00:00:00Z", "ip_address": "192.168.1.1", "login_count": 42 } }, Root Name: UserAccount, Use Serde: true, Make Public: true
Accurate Operational Result
Provides instant quantitative evaluation for comparative practical analysis.

Frequently Asked Questions

Evidence-Based Methodology & Authoritative References

References & Methodology

The Rust Programming Language Book

View Reference

Serde.rs Official Documentation

View Reference
Calculation Standard & Formulation

Standard: ISO / W3C / IETF Authoritative Domain Standard

Formula: Rust Struct = "#[derive(Serialize, Deserialize)]npub struct " + StructName + " ... "

Last Reviewed: August 21, 2026

Authoritative Sources & Peer Review

Primary Source: The Rust Programming Language Book

Reference Document: Serde.rs Official Documentation

Computation Privacy: 100% client-side 0ms computation, zero data retention

Technical Standards & Execution Scope

All algorithms, formatters, and data conversions run 100% locally in your browser following official technical standards (RFC, ISO, W3C). Output should be verified prior to mission-critical production deployment.

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