Three simple steps
How to use this tool?
This free online converter translates Gleam source code into Haskell in three simple steps.
- Step 1
Add your Gleam code
Type, paste, or upload the Gleam code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into Haskell.
- Step 3
Review the result
Review, copy, or download the resulting Haskell code from the output editor.
Language comparison
Key differences between Gleam and Haskell
| Characteristic | Gleam | Haskell |
|---|---|---|
| Syntax | Clean, concise, and influenced by ML-family languages; designed for readability and simplicity. | Declarative, indentation-sensitive, and heavily based on mathematical notation; can be more complex for beginners. |
| Paradigm | Functional, with a focus on immutability and purity, but pragmatic and designed for practical use. | Purely functional, emphasizing immutability, purity, and lazy evaluation. |
| Typing | Statically typed with strong, inferred types; no nulls or exceptions. | Statically typed with a powerful type system, type inference, and advanced features like type classes and monads. |
| Performance | Compiles to Erlang BEAM or JavaScript; inherits performance characteristics of those runtimes, optimized for concurrency. | Compiles to native code (via GHC); generally good performance, especially for CPU-bound tasks, but can be affected by laziness. |
| Libraries and frameworks | Smaller ecosystem, but can use Erlang and Elixir libraries; fewer frameworks available. | Mature ecosystem with a wide range of libraries and frameworks, especially for web, data, and concurrency. |
| Community and support | Growing but relatively small community; active core team and friendly support. | Large, established community with extensive resources, documentation, and academic support. |
| Learning curve | Gentle learning curve, especially for those familiar with functional programming; approachable syntax. | Steep learning curve due to advanced type system, purity, and abstract concepts. |
Common questions
Frequently Asked Questions
How do I convert Gleam to Haskell?
Paste your Gleam code into the input box, confirm the languages are set to Gleam and Haskell, and click Convert. CodeConvert AI analyzes your Gleam code and generates equivalent Haskell code in seconds, preserving the original logic and structure.
What are the main differences between Gleam and Haskell?
Gleam and Haskell differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each Gleam construct to its closest Haskell equivalent. See the comparison table below for the key differences between Gleam and Haskell.
Is the converted Haskell code accurate?
The AI produces high-quality Haskell code that preserves the behavior of your original Gleam code and follows Haskell conventions. It handles common patterns, data structures, and idioms for both Gleam and Haskell. For large or performance-critical code, review and test the Haskell output before using it in production.
Can I convert an entire Gleam project to Haskell?
You can convert Gleam 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 Gleam to Haskell. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Haskell back to Gleam?
Yes. CodeConvert AI converts in both directions, so you can convert Haskell to Gleam just as easily using our Haskell to Gleam converter. Try the Haskell to Gleam Converter
Is the Gleam to Haskell 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 Gleam to Haskell 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.
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