From Nenad Hrg:
WinBin2Iso converts BIN CD images to ISO images. Files over 2GB are also no problem. When it comes to a quick convert, is exactly the WinBin2Iso conversion tool that you need. The first time that you use it the program it will present you with a license screen. The program is free and the license info is only displayed the first time (per PC). WinBin2Iso does not have to be installed and can be executed easily from the desktop, and can be carried on a small USB-stick or other memory device.