The Quarter Pounder was named for the approximate pre-cooking weight of its beef patty.
McDonald’s introduced the sandwich in 1971. Its name communicated a simple numerical selling point: the beef patty weighed about one quarter of a pound before cooking. The product was intended to appeal to customers seeking a larger hamburger than the chain’s standard hamburger or cheeseburger.
The Quarter Pounder became a major part of McDonald’s product branding because the name explained the product directly. In the United States, it is served with a beef patty, cheese, onions, pickles, ketchup, and mustard on a bun, though recipes and names vary in other markets.
The number refers to the uncooked patty, not the finished sandwich and not necessarily the cooked weight. It is also distinct from the Big Mac, whose identity comes from its two-patty construction, middle bun, and special sauce rather than a numerical weight claim.