JSON to Go Struct Converter – Free Online Tool

Input

Output

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Ln 1, Col 1

Convert JSON to Go in one step

Paste JSON and get Go structs with json struct tags, ready for encoding/json. Field names are exported PascalCase, and the tags keep the original keys.

How to use it

Paste a JSON sample into the Input panel, open a file, or drop it onto the page. A sample is already loaded so you can see the result.
The Go code appears instantly in the Output panel and updates as you type.
Rename the top-level type under Settings → Root type name, and use Sort keys to order fields alphabetically.
Copy the code or Download it as Root.go.

What the Go generator produces

Exported fields with `json:"key"` tags; optional keys add omitempty.
Whole numbers become int64, decimals float64.
Missing or null values become pointers (*int64, *Address) so absent and zero can be told apart.
Nested objects become separate named structs; mixed values become any. Columns are aligned like gofmt.

Using the generated Go code

Decode JSON into the generated struct with the standard library:

var data Root
if err := json.Unmarshal(body, &data); err != nil {
	log.Fatal(err)
}
fmt.Println(data.Users[0].Name)

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JSON to Go FAQ

Why are some fields pointers?

Fields that are missing or null in your sample become pointers such as *int64, so you can distinguish "not present" from a zero value. Missing fields also get omitempty.

Which Go version is required?

The code uses any, available since Go 1.18. For older versions replace any with interface{}.

Is my data uploaded to a server?

No. The JSON to Go runs entirely in your browser using JavaScript. Your data is never uploaded, logged or stored, and the tool keeps working offline after your first visit.