Production-Grade Golang Converter

JSON to Go Structs Converter

Convert raw JSON payloads into idiomatic Go structs with aligned tags, standard initialisms (ID, URL, API), and time.Time detection.

Quick Presets:
100% Client-Side Sandbox
JSON Input
Generated Go Structs (.go)3 structs · 15 fields

100% Zero-Egress Sandbox

Never upload sensitive enterprise JSON or production API responses to third-party servers. All type inference occurs strictly inside your browser.

Idiomatic Go Initialisms

Conforms to Effective Go conventions. Automatically formats acronyms as uppercase (UserID, APIURL, UUID) and exports fields with PascalCase.

Multi-Tag & time.Time Support

Automatically imports "time" for ISO date strings, aligns columns, and lets you toggle json:, yaml:, and db: tags.

Developer Reference & Cheat Sheet

JSON to Go Structs: Type System Mapping

How Nazamos converts dynamic JSON primitives into Go's statically typed structures:

JSON Data TypeInferred Go TypeGo Struct Tag & Behavior
String ("hello")string`json:"fieldName"`
Integer (42, -100)int6464-bit integer prevents overflow on database primary keys & epoch timestamps
Float (19.99, 3.14)float64Standard IEEE-754 double precision floating point
Boolean (true / false)boolStandard Go boolean
ISO-8601 Date ("2026-09-20T...")time.TimeRequires `import "time"` (automatically unmarshaled by encoding/json)
Null / Optional Field*T or any`json:"fieldName,omitempty"` (pointer allows discriminating nil from zero-values)
Homogeneous Array ([1, 2, 3])[]int64 / []stringGo slice of the inferred element type
Object Array ([{…}, {…}])[]ItemStructSchemas merged across all array items into a unified struct definition
Nested Object ({"user": {…}})UserSeparated into dedicated named top-level struct with PascalCase

1. Standard Library Unmarshaling (`encoding/json`)

How to parse JSON payloads into your generated structs using Go's standard library:

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"time"
)

// Generated Struct from Nazamos
type UserResponse struct {
	UserID    int64     `json:"userId"`
	UserName  string    `json:"userName"`
	UserEmail string    `json:"userEmail"`
	IsActive  bool      `json:"isActive"`
	CreatedAt time.Time `json:"createdAt"`
}

func main() {
	rawJSON := []byte(`{
		"userId": 1042,
		"userName": "alex_developer",
		"userEmail": "alex@example.com",
		"isActive": true,
		"createdAt": "2026-09-20T10:30:00Z"
	}`)

	var user UserResponse
	if err := json.Unmarshal(rawJSON, &user); err != nil {
		log.Fatalf("Failed to unmarshal JSON: %v", err)
	}

	fmt.Printf("Parsed User ID: %d, Name: %s\n", user.UserID, user.UserName)
}

2. HTTP API Request Binding (net/http & Gin)

Stream JSON directly from an HTTP request body into your struct:

// net/http standard library handler
func HandleCreateUser(w http.ResponseWriter, r *http.Request) {
	var payload UserResponse
	if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
		http.Error(w, "Invalid JSON payload", http.StatusBadRequest)
		return
	}
	defer r.Body.Close()

	// Process payload...
	w.WriteHeader(http.StatusCreated)
}

JSON to Go Structs Conversion FAQs

Paste any valid JSON payload, API response, or array into the input editor. Nazamos parses the AST in real time, determines Go data types (scalars, arrays, nested maps, ISO-8601 timestamps), aligns field definitions, and generates idiomatic Go structs with customizable struct tags (json, yaml, db).