In a word, direct apk to exe conversion is not possible. A popular Android emulator today is BlueStacks. If you are looking for a way to convert apk to exe only because you want to run an Android app on Windows, download one of the Android emulators that run on Windows (or Mac) and use (install) your APK archive in that. It is doubtful that some 'one-click' apk to exe converter or apk to exe emulator exist (although you can find dubious apps like apk2exe), and you should be extra wary of online converters that advertise this as a such websites might yield files infected with some malware or ransomware or are just some kind of scam. APKs are the choice format for the Google Android platform, and EXE files are associated with Windows.
Directly exporting Android APK archives to EXE executables is not very likely because both formats are meant for different platforms.
As far as we know, no way to achieve apk to exe conversion exists.
