JSON to Go Struct
Convert JSON into Go structs with json tags. Nested types and slices inferred automatically.
About JSON to Go Struct
Paste JSON and get idiomatic Go structs with proper `json:"..."` field tags. Nested objects become separate named structs, arrays become slices, and numbers map to int64 or float64. Great for unmarshalling API responses with encoding/json. Everything runs client-side.
All processing happens entirely in your browser using modern web APIs. Nothing is uploaded to our servers — your data stays local and private. Free to use forever.
Common use cases
- Generating Go structs to unmarshal a JSON API response
- Avoiding hand-writing struct tags for large payloads
- Modeling config files as typed Go structs
- Prototyping data models from sample JSON
- Converting JSON fixtures into Go test data types
How it works
The JSON is parsed into a structural type tree. Each object becomes a Go struct with exported (PascalCased) field names and a json tag preserving the original key. Arrays become slices ([]T), integers map to int64, decimals to float64, booleans to bool, and unknown/null values to interface{}. Nested objects are emitted as their own struct types.