The Quarter Pounder was added to McDonald’s national American menu in 1973.
The burger began as a regional experiment rather than a nationwide launch. McDonald’s franchise owner Al Bernardin introduced it at his Fremont, California, restaurants in 1971 after deciding that some customers wanted more meat relative to the bun. The product proved successful, and McDonald’s expanded it to the national U.S. menu two years later.
The date 1973 is often confused with 1971 because 1971 is the year Bernardin first introduced the sandwich. The two dates describe different milestones: local creation and testing in 1971, followed by national American availability in 1973. It was designed as a larger alternative to McDonald’s standard hamburger offerings.
The “quarter pound” refers to the patty’s approximate pre-cooking weight, not the finished cooked weight. The product later appeared in multiple forms, especially the Quarter Pounder with Cheese, and was adapted under different names in some international markets where pounds are not customary.