Three simple steps
How to use this tool?
This free online converter translates OCaml source code into Gleam in three simple steps.
- Step 1
Add your OCaml code
Type, paste, or upload the OCaml code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into Gleam.
- Step 3
Review the result
Review, copy, or download the resulting Gleam code from the output editor.
Language comparison
Key differences between OCaml and Gleam
| Characteristic | OCaml | Gleam |
|---|---|---|
| Syntax | Traditional ML-style syntax with some unique constructs; can be verbose and less familiar to those from C-like languages. | Clean, modern, and minimal syntax inspired by Elm and Rust; designed for readability and approachability. |
| Paradigm | Multi-paradigm: functional, imperative, and object-oriented features. | Purely functional; no object-oriented or imperative features. |
| Typing | Statically typed with strong type inference and support for parametric polymorphism. | Statically typed with strong type inference; focuses on simplicity and safety, with no null or exceptions. |
| Performance | Compiles to efficient native code and bytecode; generally high performance. | Compiles to Erlang BEAM or JavaScript; inherits performance characteristics of the target platform, typically good for concurrent workloads. |
| Libraries and frameworks | Mature ecosystem with a wide range of libraries, especially for systems programming and academic use. | Smaller, growing ecosystem; can use Erlang and Elixir libraries via interop, but fewer native Gleam libraries. |
| Community and support | Established, active community with strong academic and industrial presence. | Smaller, newer community; friendly and growing, with active development and engagement. |
| Learning curve | Moderate to steep, especially for those unfamiliar with functional programming or ML syntax. | Gentle learning curve, especially for newcomers to functional programming; designed to be beginner-friendly. |
Common questions
Frequently Asked Questions
How do I convert OCaml to Gleam?
Paste your OCaml code into the input box, confirm the languages are set to OCaml and Gleam, and click Convert. CodeConvert AI analyzes your OCaml code and generates equivalent Gleam code in seconds, preserving the original logic and structure.
What are the main differences between OCaml and Gleam?
OCaml 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 OCaml construct to its closest Gleam equivalent. See the comparison table below for the key differences between OCaml and Gleam.
Is the converted Gleam code accurate?
The AI produces high-quality Gleam code that preserves the behavior of your original OCaml code and follows Gleam conventions. It handles common patterns, data structures, and idioms for both OCaml and Gleam. For large or performance-critical code, review and test the Gleam output before using it in production.
Can I convert an entire OCaml project to Gleam?
You can convert OCaml 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 OCaml 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 OCaml?
Yes. CodeConvert AI converts in both directions, so you can convert Gleam to OCaml just as easily using our Gleam to OCaml converter. Try the Gleam to OCaml Converter
Is the OCaml 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 OCaml 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.
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