Why Buttons Are Actually Bigger

The speed at which you click a button depends on its size and how far it is from your cursor. Larger targets that are closer are exponentially easier to hit, a principle that governs every menu on your screen.

Known as Fitts's Law, this mathematical model proves that human movement is highly predictable. Interface designers use this to place important buttons in easy-to-reach locations and make them large enough for quick navigation. It is the reason why desktop start menus and mobile navigation buttons are optimized for your thumb or mouse. By understanding these spatial constraints, developers ensure that our interaction with computers feels natural and intuitive.