What color is your blood. Red, right? Well, actually, yes. So why does it look blue when you see it through your skin? And is everyone's blood always the same color red (spoiler: no)? Do all animals have red blood ('nother spoiler: no!)? And why is red blood red anyway?
One large egg weighs approximately 2 ounces. Each egg is classified  into medium, large, extra large, and jumbo based on their actual  weight.
So how many calories in a hard boiled egg? As you can see from the table, there are about 1.5 calories per gram of hard boiled egg. A large hard-boiled egg for example has approximately 74 calories in it (give or take a few calories).