How do I convert JSON to a Go struct?

Paste your JSON into the input box, set a root struct name, and the tool generates the Go structs instantly. Click Copy Go Code to copy them into your project.

Does the generated struct include json tags?

Yes. Every field gets a json tag with the original JSON key, such as `json:"is_admin"`, while the Go field name is converted to exported PascalCase like IsAdmin.

Which Go types are used for JSON numbers?

Whole numbers become int64 and numbers with a decimal part become float64. If a field can hold both, change it to float64 by hand, because the type is inferred from the sample value only.

How are null values and empty arrays typed?

A null value becomes interface{} and an empty array becomes []interface{}, because the sample gives no type to infer. Replace them with a concrete or pointer type once you know the real shape.

Is my JSON uploaded anywhere?

No. The conversion runs locally in your browser, so the JSON you paste stays on your device.

JSON to Go Struct Generator

Generate idiomatic, typed Go struct code with json tags directly from sample JSON.

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Root Struct Name

Input JSON

Generated Go Structs (1)

package main

type UserResponse struct {
	Id int64 `json:"id"`
	Username string `json:"username"`
	Score float64 `json:"score"`
	IsAdmin bool `json:"is_admin"`
	Skills []string `json:"skills"`
}

About JSON to Go Struct Generator

The JSON to Go Struct Converter generates Go struct definitions from a sample JSON payload. Paste an API response, choose a root struct name, and the tool writes exported fields with matching json tags, so the result works with encoding/json right away. Whole numbers become int64, decimals become float64, and each nested object gets its own named struct. Everything runs in your browser, so the JSON you paste is never sent to a server.

How to use JSON to Go Struct Generator

Enter a root struct name, such as UserResponse.
Paste your sample JSON object or array into the input box.
Check the generated structs, field types, and json tags.
Click Copy Go Code and paste the structs into your .go file.

Key features

Exported PascalCase field names with the original key kept in a json tag
Maps whole numbers to int64, decimals to float64, and booleans to bool
Creates a separate named struct for every nested object
Types arrays as slices based on their first element
Shows the JSON parse error when the input is invalid
Runs in your browser — your JSON is never uploaded

Frequently asked questions

How do I convert JSON to a Go struct?: Paste your JSON into the input box, set a root struct name, and the tool generates the Go structs instantly. Click Copy Go Code to copy them into your project.
Does the generated struct include json tags?: Yes. Every field gets a json tag with the original JSON key, such as `json:"is_admin"`, while the Go field name is converted to exported PascalCase like IsAdmin.
Which Go types are used for JSON numbers?: Whole numbers become int64 and numbers with a decimal part become float64. If a field can hold both, change it to float64 by hand, because the type is inferred from the sample value only.
How are null values and empty arrays typed?: A null value becomes interface{} and an empty array becomes []interface{}, because the sample gives no type to infer. Replace them with a concrete or pointer type once you know the real shape.
Is my JSON uploaded anywhere?: No. The conversion runs locally in your browser, so the JSON you paste stays on your device.

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