Three simple steps
How to use this tool?
This free online converter translates Swift source code into Wren in three simple steps.
- Step 1
Add your Swift code
Type, paste, or upload the Swift code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into Wren.
- Step 3
Review the result
Review, copy, or download the resulting Wren code from the output editor.
Language comparison
Key differences between Swift and Wren
| Characteristic | Swift | Wren |
|---|---|---|
| Syntax | Modern, concise, influenced by Objective-C and Python, uses curly braces and type inference. | Minimalist, inspired by Lua and Smalltalk, uses indentation and simple syntax. |
| Paradigm | Multi-paradigm: object-oriented, protocol-oriented, functional, and imperative. | Primarily object-oriented with some functional features. |
| Typing | Statically typed with strong type inference. | Dynamically typed. |
| Performance | High performance, compiled to native code, suitable for production apps. | Interpreted, lightweight and fast for a scripting language, but not as fast as compiled languages. |
| Libraries and frameworks | Extensive, especially for Apple platforms (iOS, macOS), large ecosystem. | Minimal standard library, limited third-party libraries. |
| Community and support | Large, active community, strong support from Apple, lots of resources. | Small, niche community, limited resources and support. |
| Learning curve | Moderate, especially for beginners or those new to Apple development. | Gentle, simple syntax and concepts, easy for beginners. |
Common questions
Frequently Asked Questions
How do I convert Swift to Wren?
Paste your Swift code into the input box, confirm the languages are set to Swift and Wren, and click Convert. CodeConvert AI analyzes your Swift code and generates equivalent Wren code in seconds, preserving the original logic and structure.
What are the main differences between Swift and Wren?
Swift and Wren differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each Swift construct to its closest Wren equivalent. See the comparison table below for the key differences between Swift and Wren.
Is the converted Wren code accurate?
The AI produces high-quality Wren code that preserves the behavior of your original Swift code and follows Wren conventions. It handles common patterns, data structures, and idioms for both Swift and Wren. For large or performance-critical code, review and test the Wren output before using it in production.
Can I convert an entire Swift project to Wren?
You can convert Swift files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from Swift to Wren. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Wren back to Swift?
Yes. CodeConvert AI converts in both directions, so you can convert Wren to Swift just as easily using our Wren to Swift converter. Try the Wren to Swift Converter
Is the Swift to Wren converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert Swift to Wren without an account for up to 2 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
More free tools