toolkit

JSON to Go Struct

Runs in browser

Convert JSON to Go struct definitions

How to Use

Paste JSON on the left to generate a Go struct.

You will see:

  • Type-safe Go struct
  • JSON struct tags
  • Nested structs handling
  • One-click copy
Go Struct

No output yet

Enter JSON to generate Go struct

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About JSON to Go

JSON to Go Struct Converter instantly transforms JSON data into type-safe Go structs. Perfect for backend developers working with REST APIs, configuration files, or any JSON data in Go applications.

How It Works

Type Detection

The converter analyzes every field to determine the correct Go type. Integers become int64, decimals become float64, and ISO dates become time.Time.

Nested Structs

Nested objects are automatically converted into their own structs. You can choose to inline them or generate separate type definitions.

Struct Tags

Standard json tags are added automatically. Toggle omitempty to handle optional fields in your API responses.

Common Use Cases

  • API Integration: Convert API response schemas into Go structs for type-safe handling
  • Configuration: Turn JSON config files into strongly-typed Go structs
  • Data Migration: Quickly scaffold Go types when migrating from dynamic languages
  • Prototyping: Speed up development by auto-generating boilerplate struct code

Frequently Asked Questions

How do I handle null values?

Null values in JSON are ambiguous. The converter defaults to interface{} for null fields so you can decide the correct type (usually a pointer or specific type) later.

Can I use this for GORM models?

Currently, the tool generates standard JSON tags. You can manually add gorm tags to the generated structs. Support for GORM tags is on our roadmap.

💡 Pro Tips

  • Use omitempty for optional fields to avoid sending zero values to APIs
  • Rename the root struct to match your domain (e.g., User, Order)
  • This tool runs entirely in your browser — your data never leaves your computer

Further Reading