Three simple steps
How to use this tool?
This free online converter translates Nim source code into Gleam in three simple steps.
- Step 1
Add your Nim code
Type, paste, or upload the Nim 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 Nim and Gleam
| Characteristic | Nim | Gleam |
|---|---|---|
| Syntax | Python-like, indentation-based, readable and expressive with optional curly braces. | Inspired by ML-family languages, statically indented, concise, and designed for clarity. |
| Paradigm | Multi-paradigm: supports procedural, object-oriented, and functional programming. | Functional, strongly influenced by Erlang/Elixir, emphasizes immutability and pattern matching. |
| Typing | Statically typed with type inference, supports generics and metaprogramming. | Statically typed with strong type inference, no runtime type errors, no nulls. |
| Performance | Compiles to C, C++, or JavaScript; produces fast native binaries with performance close to C. | Compiles to Erlang BEAM or JavaScript; performance similar to Erlang, optimized for concurrency rather than raw speed. |
| Libraries and frameworks | Growing standard library, access to C libraries, some frameworks for web and GUI, but ecosystem is smaller than mainstream languages. | Smaller ecosystem, can use Erlang/Elixir libraries, but native Gleam libraries and frameworks are limited. |
| Community and support | Active but relatively small community, good documentation, active development. | Very small but enthusiastic community, documentation is improving, project is young and evolving. |
| Learning curve | Gentle for those familiar with Python or Pascal, but advanced features and metaprogramming can be complex. | Easy to pick up for those with functional programming background, but Erlang/BEAM concepts may be new to some. |
Common questions
Frequently Asked Questions
How do I convert Nim to Gleam?
Paste your Nim code into the input box, confirm the languages are set to Nim and Gleam, and click Convert. CodeConvert AI analyzes your Nim code and generates equivalent Gleam code in seconds, preserving the original logic and structure.
What are the main differences between Nim and Gleam?
Nim 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 Nim construct to its closest Gleam equivalent. See the comparison table below for the key differences between Nim and Gleam.
Is the converted Gleam code accurate?
The AI produces high-quality Gleam code that preserves the behavior of your original Nim code and follows Gleam conventions. It handles common patterns, data structures, and idioms for both Nim and Gleam. For large or performance-critical code, review and test the Gleam output before using it in production.
Can I convert an entire Nim project to Gleam?
You can convert Nim 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 Nim 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 Nim?
Yes. CodeConvert AI converts in both directions, so you can convert Gleam to Nim just as easily using our Gleam to Nim converter. Try the Gleam to Nim Converter
Is the Nim 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 Nim to Gleam without an account for up to 2 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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