A large egg contains about 72 calories, based on standard USDA nutrition data. That is the whole answer for the plain egg most people eat, but the number moves with the size of the egg and, more importantly, with what you cook it in. Boiling adds nothing, while frying in butter can push the same egg towards 100 calories or beyond. This guide breaks down how many calories are in an egg by size, where those calories sit inside the egg, and how each cooking method changes the total.
How Many Calories in an Egg by Size?
Eggs are graded by weight, and the bigger the egg, the more calories it carries. Using the standard USDA figures for a plain egg with nothing added: a small egg has about 54 calories, a medium egg about 63, a large egg about 72, an extra-large egg about 80 and a jumbo egg about 90.
You may see 70 on the carton instead of 72. That is not a contradiction: food labels round calorie counts, so the same large egg appears as 70 on packaging and 72 in detailed nutrition tables. For everyday purposes, counting a large egg as roughly 70 to 75 calories is accurate enough for any meal plan.
Egg White vs Egg Yolk: Where the Calories Sit
The two halves of the egg are almost opposite foods. The white of a large egg holds only about 17 calories, yet provides over half of the egg’s protein, around 3.6 of its roughly 6.3 grams. The yolk holds about 55 calories, nearly all of the egg’s fat, and most of its vitamins, including vitamin D, B12 and the nutrient choline.
This is why egg-white omelettes exist: dropping yolks cuts the calories sharply. It is also why many nutrition guides suggest a middle path of whole eggs most days, since the yolk carries much of what makes an egg worth eating in the first place. The calories in the yolk buy real nutrition, not empty energy.
How Cooking Changes the Count
Cooking an egg changes its calories far less than what you cook it in. A boiled or poached large egg stays at roughly 72 to 78 calories, because water and steam add nothing. A fried egg is usually listed at around 90 calories, assuming a modest amount of oil or butter in the pan; a generous knob of butter adds more, since a tablespoon of butter alone is about 100 calories and some of it ends up on the plate. Scrambled eggs land around 90 to 100 calories per egg once milk and a little butter join in, and an omelette filled with cheese climbs further still, mostly because of the cheese.
The practical rule is simple: the egg is the constant, the fat is the variable. If you are counting, boil, poach or use a non-stick pan with a small amount of oil, and your egg stays close to its natural 72.
Are Eggs a Good Food When You Are Counting Calories?
For most people, yes, and the reason is satiety rather than the raw number. Around 6 grams of protein in a 72-calorie package makes eggs unusually filling for their size, and protein-rich breakfasts are a classic strategy for feeling full through the morning on fewer total calories. Eggs also fit neatly into ordinary eating patterns, as our beginner’s guide to what a balanced diet is sets out: the goal is the overall pattern of meals, not perfection in any single food.
Two cautions are worth keeping in proportion. Eggs do contain cholesterol, roughly 186 milligrams in a large egg, nearly all of it in the yolk. Current dietary guidance treats eggs as fine for most healthy people in normal amounts, but anyone who has been given specific advice about cholesterol by their doctor should follow that advice over any general guide. And the company an egg keeps matters: two boiled eggs are a light meal, while the same eggs fried with bacon, sausage and buttered toast are a very different total.
So: about 72 calories for a large egg, 17 in the white and 55 in the yolk, unchanged by boiling and modestly increased by frying. It is one of the most useful numbers in everyday eating, because so many breakfasts start with it.
This article is general information only and is not medical or dietary advice. If you have a health condition or have been given personal guidance about cholesterol or diet, please follow your own health professional’s advice.
