Three simple steps
How to use this tool?
This free online converter translates Janet source code into F# in three simple steps.
- Step 1
Add your Janet code
Type, paste, or upload the Janet code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into F#.
- Step 3
Review the result
Review, copy, or download the resulting F# code from the output editor.
Language comparison
Key differences between Janet and F#
| Characteristic | Janet | F# |
|---|---|---|
| Syntax | Lisp-like, uses s-expressions and parentheses, minimalistic and homoiconic. | OCaml-inspired, uses indentation and significant whitespace, more traditional ML-style syntax. |
| Paradigm | Multi-paradigm with emphasis on functional and imperative programming, supports metaprogramming. | Primarily functional, also supports object-oriented and imperative programming. |
| Typing | Dynamically typed. | Statically typed with type inference. |
| Performance | Interpreted, suitable for scripting and embedding, generally slower than compiled languages. | Compiled to .NET bytecode, generally faster and suitable for high-performance applications. |
| Libraries and frameworks | Smaller standard library, fewer third-party libraries, but easy to extend with C. | Access to the extensive .NET ecosystem, many libraries and frameworks available. |
| Community and support | Small but active community, limited resources and support. | Larger community, backed by Microsoft, more resources and support available. |
| Learning curve | Steep for those unfamiliar with Lisp syntax, but simple core concepts. | Moderate, especially for those with functional programming or .NET experience. |
Common questions
Frequently Asked Questions
How do I convert Janet to F#?
Paste your Janet code into the input box, confirm the languages are set to Janet and F#, and click Convert. CodeConvert AI analyzes your Janet code and generates equivalent F# code in seconds, preserving the original logic and structure.
What are the main differences between Janet and F#?
Janet and F# differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each Janet construct to its closest F# equivalent. See the comparison table below for the key differences between Janet and F#.
Is the converted F# code accurate?
The AI produces high-quality F# code that preserves the behavior of your original Janet code and follows F# conventions. It handles common patterns, data structures, and idioms for both Janet and F#. For large or performance-critical code, review and test the F# output before using it in production.
Can I convert an entire Janet project to F#?
You can convert Janet 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 Janet to F#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert F# back to Janet?
Yes. CodeConvert AI converts in both directions, so you can convert F# to Janet just as easily using our F# to Janet converter. Try the F# to Janet Converter
Is the Janet to F# 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 Janet to F# 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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