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How to Convert Swift to JSON - Step by Step Guide

Step 1

Input Your Swift Code

Start by pasting your Swift dictionary, struct, or data structure that needs to be converted to JSON format. The tool supports dictionaries, arrays, and struct initialization.

Paste Swift code: Copy your Swift dictionary or struct directly into the editor
Upload a file: Load Swift code from a .swift file on your computer
Try samples: Click sample buttons to see different Swift patterns (dictionaries, structs, nested structures)
Step 2

Click Convert Button

Click the green "Convert" button to send your Swift code to our Python backend API for processing. The converter transforms Swift syntax to JSON format, handling true/false, nil values, and proper quote formatting.

Boolean conversion: Swift true/false becomes JSON true/false
Nil handling: Swift nil converts to JSON null
Dictionary support: Swift dictionaries ["key": value] convert to JSON objects
Struct initialization: Swift struct(name: value) converts to JSON objects
Nested structures: Handle complex Swift data hierarchies
Step 3

Get Valid JSON Output

The tool produces properly formatted, valid JSON that's ready to use in your applications, APIs, or configurations.

Step 4

Copy or Download JSON

Copy the JSON to your clipboard or download it as a .json file for use in your Swift or iOS projects.

What is Swift to JSON Conversion?

Swift to JSON conversion transforms Swift data structures like dictionaries, arrays, and structs into standard JSON format. This process converts Swift-specific syntax into JSON-compliant syntax for data interchange and API communication.

The conversion is essential for iOS and macOS applications, REST APIs, and configuration management where JSON is the standard format for data exchange. You can also convert other languages like Kotlin to JSON or TypeScript to JSON using our related tools.

Frequently Asked Questions

How do I convert Swift dictionary to JSON?

Simply paste your Swift dictionary into the converter. It will automatically convert Swift syntax (["key": value], true, false, nil) to valid JSON format.

Does the converter handle nested Swift structures?

Yes! The converter properly handles nested dictionaries, arrays, and structs, converting them to equivalent JSON representations while maintaining the structure.

What Swift data types are supported?

The converter supports Swift dictionaries, arrays, structs, strings, numbers, booleans (true/false), and nil. These are converted to their JSON equivalents.

Is the output valid JSON?

Yes! The converter produces standard, valid JSON that can be used in any application or API.

Is the Swift to JSON converter free?

Yes, completely free with no limitations on data size or conversion frequency. No registration required.