Calories in Egg

Eggs are a great source of muscle-building, lean protein. That said, one large egg yolk has approximately 59 calories (250 kilojoules), 5 grams of fat, 213 milligrams of cholesterol, and 6 grams of protein. Eliminate 26 calories (110 kilojoules) and 5 grams of fat per egg by substituting 2 egg whites for each whole one, and you'll be left with six grams of protein.

Learn more about the nutritional value of egg whites.