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JSON to Go Struct Converter

JSON to Go Struct Converter

Convert JSON data into idiomatic Go (Golang) struct definitions with automatic json/bson tags, pointers, and nested struct models.

Root Struct Name:
Package Name:
Use omitempty in tags:
Valid Syntax

Quick Answer & Understanding Your Result

Source: The Go Programming Language Specification

A JSON to Go Struct Converter transforms JSON payloads into idiomatic Go (Golang) `type Name struct` definitions, complete with json:"key" struct tags.

Core Golang Code Generation Features

  • Idiomatic PascalCase Fields: Automatically converts snake_case and camelCase keys into exported Go PascalCase struct field names (e.g. user_id ightarrow UserID).
  • Comprehensive Struct Tags: Generates standard json:"key,omitempty", bson:"key" (for MongoDB), and db:"key" (for SQLx/GORM) tags.
  • Nested Struct Decomposition: Decouples deeply nested objects into reusable standalone Go structs.

Go Backend Applications

  • Gin / Fiber / Echo REST Handlers: Typing request body unmarshaling (c.BindJSON(&req)) and response payloads.
  • Microservices & gRPC: Building Go data models for serialization with JSON and Protobuf.

Paste your JSON payload above to generate idiomatic Go struct code instantly.

Formula & Calculation Logic

Technical Specification & AST
Mathematical Formula
Go Struct
= "type " + StructName + " struct n" + Fields.map(f ⇒ f.name + " " + f.type + " `json:"" + f.tag + ""`").join("n") + "n"

Go type mapping:

  • Maps JSON strings to string, floats/integers to int64 / float64, booleans to bool, and arrays to []Type.

Step-by-Step Guide

1

Paste JSON Payload

Paste your raw JSON object into the editor.

2

Set Struct Name

Enter target Go struct name (e.g. `User` or `Config`).

3

Copy Idiomatic Go Code

Copy generated struct definitions directly into your Go package.

Worked Examples Table

ExampleInput ValuesCalculated ResultExplanation
User JSON to Go Struct
Root Name: User, Json: { "user_id": 10824, "api_key": "sec_live_9901a8bc", "is_active": true, "account_balance": 1540.75, "http_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 } }, Package: models, Omitempty: true
type User struct { UserID int64 `json:"user_id"` Name string `json:"name"` }
Generated exported PascalCase fields with matching json tags.
User Account & Security
Json: { "user_id": 10824, "api_key": "sec_live_9901a8bc", "is_active": true, "account_balance": 1540.75, "http_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: UserAccountPayload, Package: models, Omitempty: true
Accurate Operational Result
Provides instant quantitative evaluation for comparative practical analysis.

Frequently Asked Questions

Evidence-Based Methodology & Authoritative References

References & Methodology

The Go Programming Language Specification

View Reference

Go CodeReviewComments - Initialisms

View Reference
Calculation Standard & Formulation

Standard: ISO / W3C / IETF Authoritative Domain Standard

Formula: Go Struct = "type " + StructName + " struct n" + Fields.map(f ⇒ f.name + " " + f.type + " `json:"" + f.tag + ""`").join("n") + "n"

Last Reviewed: August 21, 2026

Authoritative Sources & Peer Review

Primary Source: The Go Programming Language Specification

Reference Document: Go CodeReviewComments - Initialisms

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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