JSON to Go Struct

Generate Go structs from JSON

JSON Input

Go Struct Output

About JSON to Go Struct

JSON to Go Struct generates a single Root struct with one field per top-level JSON key, entirely in your browser — nothing is uploaded to a server. Strings, numbers, and booleans map to string, float64, and bool with json struct tags matching your original keys; arrays become []interface{} and nested objects become interface{}, since nested values aren't recursively converted into their own structs.

How to use JSON to Go Struct

1Paste your JSON into the input box.
2Click 'Convert' to generate a Go struct from the top-level properties.
3Review the output and add nested struct types by hand where needed.
4Click 'Copy' to copy the code into your project.

Frequently Asked Questions

Is JSON to Go Struct free to use?

Yes, it's completely free with no signup required.

Does it generate nested structs for nested JSON?

No — only top-level keys become typed fields. Nested objects are typed as interface{} and arrays as []interface{}, rather than generating separate nested struct types.

Is the generated code ready to use as-is?

For flat JSON, yes. For nested data, you'll need to manually define additional struct types and update the field types to reference them.

Is my data uploaded to a server?

No, generation happens entirely in your browser.

Tips & Tricks

✓Field names are capitalized only on the first letter (e.g. first_name becomes First_name) so they're exported — rename them to proper Go convention (FirstName) by hand if you want that style.
✓The json struct tag preserves your original JSON key, so encoding/json still marshals and unmarshals correctly even after you rename the Go field.
✓For nested objects or arrays of objects, manually create additional struct types and update the generated field types to match.
✓Numbers always map to float64 — change to int or another numeric type if that better fits your data.