Can I Convert an AutoHotkey Script to Karabiner-Elements?

There isn’t a universal converter because AutoHotkey uses imperative scripts, while Karabiner-Elements uses declarative JSON rules. Simple remaps and hotkeys can usually be recreated manually with Karabiner’s Complex Modifications editor, which provides a rule builder so you may not need to edit JSON directly.

If the script is small, you can probably rewrite the individual hotkeys by hand using Karabiner’s JSON format. Look at a few example rules and match each AutoHotkey shortcut to a Karabiner event. Features such as text expansion or substitutions aren’t a good fit for Karabiner; use Alfred or macOS’s built-in text replacement for those. For more advanced behavior, Hammerspoon may be a better alternative.