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LUA JS
Not possible

Convert LUA to JS

Can you convert LUA to JS?
Verified by Adam B.· reviewed by FE Editorial ·updated Jul 30, 2026
QUICK ANSWER
Is it possible to convert LUA to JS?
No - not a direct conversion.

Lua and JavaScript differ in table/array indexing, metatable inheritance, coroutine handling, and scoping rules in ways that break automated conversion. The practical options are a manual port in Visual Studio Code or running the .lua file unchanged inside a JavaScript environment using Fengari.

No direct path
Also to JS: WASM · MJS · AXD

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert LUA to JS?

Lua uses 1-based tables as its sole data structure and metatables for inheritance, while JavaScript uses 0-based arrays and prototype chains. Lua coroutines do not map cleanly to JavaScript async/await or generators. These structural differences mean any transpiler output requires heavy manual correction on real-world code.

How to convert LUA to JS

Visual Studio Code FREE

Open the .lua file in Visual Studio Code and port the logic to JavaScript manually, function by function. This is the only approach that correctly handles metatables, coroutines, and advanced table usage.

Programs that convert LUA

Visual Studio Code

About these formats

.LUA Lua Script (source code)

A LUA file is source code written in Lua, a lightweight scripting language created in 1993. Any code editor (VS Code, Notepad++) opens it for reading or editing. To run it you need the Lua…

Open .LUA details →
.JS JavaScript Source File

A JS file is a JavaScript source code file - plain, readable text that powers web page interactivity and server-side apps via Node.js. Open it in any code editor such as VS Code or…

Open .JS details →

Quality & what to watch

  • No existing tool handles general Lua-to-JavaScript transpilation; tools that exist break on metatables and coroutines.
  • Lua arrays are 1-based; JavaScript arrays are 0-based - any manual port must account for this index offset throughout.
  • Fengari runs the original .lua source without modification; it does not produce JavaScript code.

Frequently asked questions

Is there any tool that converts Lua to JavaScript automatically?
Nothing that works on real code. Existing tools handle only trivial Lua subsets and produce broken output when metatables or coroutines are involved.
Can an AI help translate Lua to JavaScript?
An LLM can port simple, well-structured functions accurately, but coroutine patterns and metatable-heavy code need significant manual rethinking, not just translation.
My Lua script needs to run in a browser - do I have to rewrite it?
Not necessarily. Fengari runs Lua inside a browser via WebAssembly, so you can use the .lua file directly without producing JavaScript source.
Why do some websites list Lua to JavaScript as a supported conversion?
Those pages are auto-generated from format databases. The database entry for this pair acknowledges no general solution exists and lists no software.