Eggs are classified from 38g (small) to 63g (jumbo). I normally buy large (50g) or extra large (56g) eggs, so I will give you the data for those: The egg contains 72 or 80 calories, and 5g or 5.5g of fat. Of that fat, 1.55g or 1.74g are saturated, 1.95g or 2.14g are monounsaturated, and .68g or .76g are polyunsaturated.