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Free Wren to Gleam Converter

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upload iconClick to select or drop your input code file here.

You can also type the input code below.

How to use this tool?

This free online converter lets you convert code from Wren to Gleam in a click of a button. To use this converter, take the following steps -

  1. Type or paste your Wren code in the input box.
  2. Click the convert button.
  3. The resulting Gleam code from the conversion will be displayed in the output box.

Key differences between Wren and Gleam

CharacteristicWrenGleam
SyntaxC-like, concise, and familiar to users of JavaScript or C-family languages.Inspired by ML-family languages, with a clean, indentation-insensitive syntax similar to Elm or OCaml.
ParadigmObject-oriented with some scripting features.Functional, emphasizing immutability and pattern matching.
TypingDynamically typed.Statically typed with strong type inference.
PerformanceInterpreted, generally fast for a scripting language but not as fast as compiled languages.Compiled to Erlang BEAM or JavaScript, offering good performance for concurrent and functional workloads.
Libraries and frameworksLimited standard library, few third-party libraries due to its young ecosystem.Can use Erlang and Elixir libraries via BEAM, but native Gleam libraries are still growing.
Community and supportSmall but active community, limited resources and support.Growing community, benefits from Erlang/Elixir ecosystem, more resources emerging.
Learning curveGentle for those familiar with C-like languages; simple and approachable.Steeper for those new to functional programming, but approachable for those with ML or Elm experience.

Frequently Asked Questions

How do I convert Wren to Gleam?

Paste your Wren code into the input box, confirm the languages are set to Wren and Gleam, and click Convert. CodeConvert AI analyzes your Wren code and generates equivalent Gleam code in seconds, preserving the original logic and structure.

What are the main differences between Wren and Gleam?

Wren and Gleam differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each Wren construct to its closest Gleam equivalent. See the comparison table below for the key differences between Wren and Gleam.

Is the converted Gleam code accurate?

The AI produces high-quality Gleam code that preserves the behavior of your original Wren code and follows Gleam conventions. It handles common patterns, data structures, and idioms for both Wren and Gleam. For large or performance-critical code, review and test the Gleam output before using it in production.

Can I convert an entire Wren project to Gleam?

You can convert Wren 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 Wren to Gleam. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.

Can I convert Gleam back to Wren?

Yes. CodeConvert AI converts in both directions, so you can convert Gleam to Wren just as easily using our Gleam to Wren converter. Try the Gleam to Wren Converter

Is the Wren to Gleam 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 Wren to Gleam without an account for up to 5 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.