A normal egg white is about 30g.

Generally, the weight of an egg is about 50-60g, and the protein of an egg accounts for about 60% of the whole egg, so an egg protein is about 30g.

The calories contained in an egg are equivalent to the calories of half an apple or half a cup of milk, but it also contains 8% of the phosphorus, 4% of zinc, 4% of iron, 12.6 % protein, 6% vitamin D, 3% vitamin E, 6% vitamin A, 2% vitamin B, 5% vitamin B2, 4% vitamin B6.