Three simple steps
How to use this tool?
This free online converter translates Gleam source code into OCaml 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 OCaml.
- Step 3
Review the result
Review, copy, or download the resulting OCaml code from the output editor.
Language comparison
Key differences between Gleam and OCaml
| Characteristic | Gleam | OCaml |
|---|---|---|
| Syntax | Clean, modern, and influenced by Elm and Rust; uses significant whitespace and is designed for readability and simplicity. | Traditional ML-family syntax with explicit delimiters (e.g., 'let', 'in', ';;'); can be more verbose and less familiar to newcomers. |
| Paradigm | Purely functional with strong emphasis on immutability and no side effects; designed for concurrent and fault-tolerant systems. | Multi-paradigm: primarily functional but supports imperative and object-oriented programming. |
| Typing | Statically typed with strong, sound type inference; no null or undefined values. | Statically typed with powerful type inference; supports variant types, polymorphism, and modules. |
| Performance | Compiles to Erlang BEAM or JavaScript; inherits performance characteristics of the target platform, optimized for concurrency rather than raw speed. | Compiles to native code and bytecode; generally faster for CPU-bound tasks, with efficient garbage collection and runtime. |
| Libraries and frameworks | Smaller ecosystem; can use Erlang/Elixir libraries via interop, but fewer native Gleam libraries. | Mature ecosystem with a wide range of libraries and tools, especially for systems programming, compilers, and formal methods. |
| Community and support | Growing but small community; active development and friendly support, but fewer resources. | Established community with decades of academic and industrial use; extensive documentation and support channels. |
| Learning curve | Gentle learning curve due to simple syntax and clear error messages; good for beginners in functional programming. | Moderate to steep learning curve, especially for those unfamiliar with ML syntax or advanced type system features. |
Common questions
Frequently Asked Questions
How do I convert Gleam to OCaml?
Paste your Gleam code into the input box, confirm the languages are set to Gleam and OCaml, and click Convert. CodeConvert AI analyzes your Gleam code and generates equivalent OCaml code in seconds, preserving the original logic and structure.
What are the main differences between Gleam and OCaml?
Gleam and OCaml 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 OCaml equivalent. See the comparison table below for the key differences between Gleam and OCaml.
Is the converted OCaml code accurate?
The AI produces high-quality OCaml code that preserves the behavior of your original Gleam code and follows OCaml conventions. It handles common patterns, data structures, and idioms for both Gleam and OCaml. For large or performance-critical code, review and test the OCaml output before using it in production.
Can I convert an entire Gleam project to OCaml?
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 OCaml. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert OCaml back to Gleam?
Yes. CodeConvert AI converts in both directions, so you can convert OCaml to Gleam just as easily using our OCaml to Gleam converter. Try the OCaml to Gleam Converter
Is the Gleam to OCaml 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 OCaml 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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