Does Flutter compile to Kotlin?

Yes. Flutter is great for both mobile and web app development as it is highly compatible with current-generation web rendering technologies like HTML, CSS, and JavaScript . Using Flutter, you can easily compile the existing code into a client experience, embed it into the browser, and then deploy it to any web server.

Yeah, right. Flutter SDK has done converting work for us already, just code in Dart then when compiling it will transform to Kotlin or Swift to run on the native platforms .

Source: Based on Flutter System Architecture Using the Dart language allows Flutter to compile the source code ahead-of-time to native code. The engine’s C/C++code is compiled with Android’s NDK or iOS’ LLVM . Both pieces are wrapped in a “runner” Android and iOS project, resulting in an apk or ipa file respectively.29 Nis 2019