I always used either the standard or the scientific #calculator on #Windows. I discovered today that Windows also has a calculator for #programmers that I can switch to. It's really helpful when you deal with numbering systems such as binary, decimal or hexadecimal.
@maricela There are even keyboard shortcuts to get there! Alt + 1 through Alt + 5 are the different modes. Alt+4 gets you to the programmer's calculator, then F2 through F12 helps select radix.
https://support.microsoft.com/en-us/windows/keyboard-shortcuts-in-apps-139014e7-177b-d1f3-eb2e-7298b2599a34#bkmk_cal