Convert JSON to Swift instantly. Perfect for creating Swift Codable models from API responses, generating data structures for iOS/macOS apps.
Paste code in both editors to see differences
Hint: Paste original code on left, modified code on right, then click Compare to see differences highlighted.
Hint: Paste your code, customize font size and line numbers, then click Export PDF to download formatted code.
Hint: Paste your JWT token to decode and view its header, payload, and signature. The tool validates token structure and format.
Hint: Select conversion type, paste your data, and get instant conversion. Supports JSON, YAML, XML, Excel, PDF, and more.
Need a different conversion? Visit our converter hub for more options.
Converting JSON to Swift creates type-safe Codable structs for iOS and macOS development. Our AI converter analyzes JSON structure - object keys become Swift properties with inferred types, nested objects create nested structs, and arrays map to Swift Array types. Perfect for generating models from REST API responses, creating data structures for JSON parsing, building type-safe networking layers, or eliminating manual struct creation. The generated Swift code conforms to Codable protocol, enabling automatic JSON encoding/decoding with JSONDecoder/JSONEncoder. Properties use appropriate Swift types (String, Int, Double, Bool, Array, nested structs) with optional types for nullable JSON fields.
Generates Swift structs conforming to Codable protocol. Properties map to JSON keys with correct types, automatic CodingKeys handle snake_case to camelCase conversion, and Decodable/Encodable work automatically with JSONDecoder.
Creates type-safe Swift code. JSON strings become String, numbers become Int/Double, booleans become Bool, null values become optionals (Type?), and arrays become [Type] for compile-time type checking.
Handles nested JSON with nested Swift structs. Complex object hierarchies create properly nested struct definitions, maintaining relationships and enabling clean dot-notation access (user.address.city).
Infers Swift optionals from JSON. Properties that can be null or missing become optional types (String?), required properties are non-optional, preventing runtime crashes from missing JSON fields.
JSON converts to Swift Codable structs. Object keys become struct properties with appropriate types, nested objects create nested structs, and arrays become Swift Array types. The generated structs conform to Codable for automatic JSON encoding/decoding.
JSON null values convert to Swift optional types. Properties that can be null become optional (String?), required properties are non-optional, and the converter analyzes sample JSON to determine which fields are optional.
Yes! Nested objects create nested structs, arrays of objects create struct arrays ([User]), mixed types use enums with associated values, and JSON with multiple schemas can generate protocol-based designs for flexibility.
