One often needs to convert a RAR archive to ISO using direct conversion (no need to use one program to extract and the other to create ISO). A common use case of such conversion is possibility to mount resulting ISO images without having to unpack (mount to virtual machine or a virtual drive). Here comes AnyToISO, it does the job in a single click:
AnyToISO will convert to ISO or extract the image to your local drive.
Password protected RAR archives are also supported.