Summary: It is getting hard to find calculators that do hexadecimal. 30 years ago, almost all calculators had hex and binary as well as decimal math. Now only a few do and this is the best one I have found, it replaces a Sharp calculator I bought about 25 years ago that still works, but sometimes refuses to turn off. That means it cost me about 50 cents a year to use. Good value in a day of so many disposable things that fall apart after six months.