Well I never really use any software. I think that if you boot Windows installation from USB. The page where you choose which drive to install to. I always “delete” all the available drive. When you select an unallocated drive to install, it will automatically reformat the drive into whichever format is best.
So even if I purchased an old PC with a pre-installed Windows 7 with an MBR drive at first. When I clean install another Windows by deleting all partition. The Windows installer will automatically reformat it to GPT anyway.
Been doing this method at least twice a year on all my PCs.