How is egg size determined?
Size represents the minimum net weight per dozen. In descending order, egg sizes are Jumbo (30 ounces per dozen), Extra Large (27 ounces), Large (24 ounces), Medium (21 ounces), Small (18 ounces) and Peewee (15 ounces). Medium, Large and Extra Large are the sizes most commonly available because these are the sizes hens most often lay. Size classifications were established by the U.S. Department of Agriculture and have been the same for decades. You may find some eggs in a dozen that seem a bit larger or smaller than the others, though. Hens operate according to nature and seldom produce perfectly matched cartonsful. No matter how big or small the eggs look, however, you’re getting your money’s worth. Automatic weighing equipment is programmed to provide at least the minimum weight, or more.
