JSON to Go Struct Generator Online
Generate Go structs with proper json tags from JSON input instantly. Our free JSON to Go converter helps Golang developers scaffold data models fast and accurately.
About JSON to Go Struct Generator
Go developers frequently need to define structs matching JSON API responses. Writing struct tags by hand and choosing correct types like int versus float64 takes time. This JSON to Go converter generates properly tagged structs with pointer types for nested objects.
How it works
Paste your JSON into the Input panel. Set the Struct Name for the root type and Package name for your Go module. Click Generate Go and the tool creates struct definitions with json tags matching the original key names.
Nested objects become pointer types with asterisk prefix. Arrays generate slice types with square brackets. The output includes your package declaration at the top. Copy or Download saves the .go file for your project.
When you'd use this
Go developers building API clients need structs that unmarshal correctly from JSON responses. This tool eliminates manual struct definition and ensures json tags match the API exactly for reliable deserialization.
The generator infers types from sample data. If your API returns different types for the same field, you may need to use interface manually. Always test generated structs with actual API responses.
Questions
Why are nested objects pointers?
Pointer types allow nil values for optional nested objects, matching Go best practices for JSON unmarshaling.
How are arrays handled?
Arrays become slices with the element type inferred from the first item, like []string or []*NestedStruct.
What about empty arrays?
Empty arrays default to []interface since the element type cannot be determined from empty data.
Does it preserve key names in tags?
Yes. The json tag uses the original JSON key name exactly, including any special characters or casing.
Can I change the package name?
Yes. Enter your desired package name in the Package field before generating the struct.