Eggs are also graded by size. The table below gives the minimum weight per dozen (including shell) of each size category. Note that each size differs from the next by 3 ounces per dozen. European eggs are also graded by size, with size 1 being the largest (70 g each, or about 2.5 oz) and 7 being the smallest (45 g each, or about 1.6 oz). This weight includes the shell.
Large eggs are the standard size used in baking and in food service. Shelled large whole eggs, yolks, and whites have the following approximate weights.