JSON to Go Converter

JSON (JavaScript Object Notation) is used for REST API responses, configuration files, NoSQL documents. Writing Go models from JSON by hand is repetitive and error-prone. This converter automates that step entirely — paste your JSON, get Go models instantly.

Generate Go structs with correct JSON/XML tags, pointer types for optional fields, and idiomatic naming.

How to use this converter

1. Paste your JSON into the left editor panel
2. Click Generate
3. Copy the generated Go code from the right panel

No account. No upload. No tracking. Runs entirely in your browser.

Example Go output

type Address struct {
    City string `json:"city"`
    Zip  string `json:"zip"`
}
 
type User struct {
    ID      int      `json:"id"`
    Name    string   `json:"name"`
    Email   *string  `json:"email,omitempty"`
    Address Address  `json:"address"`
}

The problem with manual JSON-to-Go mapping

Go is a statically typed, compiled language — typed data models are central to how it works. Yet copying fields from JSON payloads into Go struct definitions introduces subtle errors:

• Mistyped field names cause silent deserialization failures
• Missing optional fields trigger runtime panics or null errors
• Schema drift between API and model goes undetected until production

Go structs support JSON/XML struct tags (json:"field") that control serialization — this converter generates them automatically.

This converter eliminates the manual step entirely.

Go and JSON: what you need to know

Go is a statically typed, compiled language, widely used in cloud infrastructure, CLIs, and microservices. It uses struct-based with explicit field tags for structured data — making it a natural fit for JSON-driven applications.

What the converter generates

Output follows Go conventions: PascalCase field names, json:"fieldName" struct tags, and pointer types (*string, *int) for nullable fields. Nested objects become separate named structs.

A common gotcha

Go requires exported (capitalized) field names; unexported fields are silently ignored during marshalling.

JSON input characteristics

JSON supports nested objects, arrays, strings, numbers, booleans, and null. Tools like jq, Postman, and browser DevTools make JSON the most developer-friendly data exchange format.

When should I use this converter?

Use this when building Go microservices that consume external API responses or config files, and you need correct struct tags without hand-writing each field.

Common use cases

• Generating structs for encoding/json unmarshalling in REST API handlers
• Creating typed models for gRPC service definitions
• Producing structs for Go-based CLI tools that consume config files
• Creating typed DTOs for Kubernetes operators
• Rapid prototyping with real JSON payloads
• Keeping Go structs in sync when JSON schemas evolve
• Onboarding new team members by auto-generating the data layer
• Validating JSON contract compatibility with Go type definitions
• Generating Go models from backend APIs API responses

Frequently asked questions

What JSON inputs does this converter accept?

Paste any valid JSON — including REST API responses, configuration files, NoSQL documents. The converter infers types and generates a matching Go model.

What serialization library does the generated Go code assume?

The generated code is compatible with the standard Go serialization ecosystem — exported structs with json: and xml: field tags. No unusual dependencies required.

What version of Go does the output target?

The converter targets modern Go conventions — exported structs with json: and xml: field tags. If you need output for an older version, the generated code can typically be adapted with minor changes.

Is my JSON data sent to a server?

No. All conversion runs locally in your browser using client-side JavaScript. Your JSON data never leaves your machine.

Related tools on LangStop

• JSON Formatter & Validator
• JSON to Python Converter
• JSON to Java Converter
• JSON to Rust Converter
• JSON to JSON Schema

If you work frequently with JSON and Go, bookmark this page to skip the manual model-writing step entirely.