Online Gleam to Crystal Converter
Click 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 Gleam to Crystal in a click of a button. To use this converter, take the following steps -
- Type or paste your Gleam code in the input box.
- Click the convert button.
- The resulting Crystal code from the conversion will be displayed in the output box.
Key differences between Gleam and Crystal
| Characteristic | Gleam | Crystal |
|---|---|---|
| Syntax | Has a syntax inspired by ML-family languages (like OCaml and Elm), focusing on clarity and simplicity. | Has a syntax heavily inspired by Ruby, aiming for expressiveness and readability. |
| Paradigm | Functional programming, immutable data, and strong emphasis on pure functions. | Multi-paradigm but primarily object-oriented, with support for functional and imperative styles. |
| Typing | Statically typed with strong, inferred types and no nulls. | Statically typed with type inference, but allows nil (nullable types). |
| Performance | Compiles to Erlang BEAM bytecode, offering performance similar to Erlang/Elixir (good for concurrency, not raw speed). | Compiles to native code via LLVM, offering performance close to C for many workloads. |
| Libraries and frameworks | Smaller ecosystem, can use Erlang/Elixir libraries via interop, but fewer native libraries. | Growing ecosystem with native libraries and frameworks, especially for web development (e.g., Amber, Lucky). |
| Community and support | Small but active and friendly community, mostly centered around functional programming and BEAM. | Larger and more established community, with more resources and contributors. |
| Learning curve | Gentle for those familiar with functional programming; may be steeper for those new to the paradigm. | Easy for Ruby developers; approachable for others due to familiar syntax and gradual typing. |
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