A large hard-boiled egg contains about 78 calories. That makes it one of the most nutrient-dense foods you can eat for under 80 calories, packing in over 6 grams of protein with virtually zero carbohydrates.
Calories by Egg Size
Most nutrition labels and recipes reference a “large” egg, which weighs roughly 50 grams without the shell. But egg size affects the calorie count noticeably. Here’s what to expect across standard sizes:
- Small (about 38 g): roughly 54 calories
- Medium (about 44 g): roughly 63 calories
- Large (about 50 g): roughly 78 calories
- Extra-large (about 56 g): roughly 86 calories
- Jumbo (about 63 g): roughly 96 calories
These numbers scale almost linearly with weight. If you buy jumbo eggs from the store, you’re getting about 20 more calories per egg than the large size most calorie trackers default to. For anyone counting carefully, weighing your eggs on a kitchen scale gives the most accurate count.
Full Macronutrient Breakdown
One large hard-boiled egg (50 g) provides:
- Protein: 6.3 g
- Total fat: 5.3 g (1.6 g saturated)
- Carbohydrates: 0.6 g
- Fiber: 0 g
That protein-to-calorie ratio is hard to beat. You’re getting about 6 grams of complete protein (meaning it contains all nine essential amino acids) for every 78 calories. The fat is split roughly evenly between the healthy unsaturated kind and a small amount of saturated fat. And with just over half a gram of carbs, boiled eggs fit comfortably into low-carb and keto eating patterns.
The yolk carries most of the fat and calories, while the white is almost pure protein. If you eat only the white of a large egg, you’ll get about 17 calories and 3.6 grams of protein, but you’ll miss out on most of the vitamins and minerals.
How Cooking Method Changes the Count
Boiling and poaching don’t add any calories because no fat is used in cooking. A 60-gram boiled egg and a 60-gram poached egg land at the same 74 to 78 calories. The difference shows up when you start frying. Adding a teaspoon of butter adds about 34 calories, and a teaspoon of oil adds around 40. A fried egg cooked in a generous amount of butter or oil can easily reach 115 to 120 calories.
If you’re trying to keep calories low, boiling is the simplest approach. You also avoid the variability that comes with frying, where the amount of fat absorbed depends on pan temperature, cooking time, and how much oil you use.
Key Vitamins and Minerals
Eggs punch well above their weight in micronutrients. One large egg provides about 10% of your daily vitamin D, making it one of the few foods that naturally contains a meaningful amount. Eggs are also a top dietary source of choline, a nutrient most people don’t get enough of that plays a central role in brain function and liver health. You’ll also get vitamin B12, selenium, and vitamin A, mostly concentrated in the yolk.
This is why ditching the yolk to save calories comes with a real trade-off. The white gives you protein, but the yolk delivers nearly all the vitamins, minerals, and healthy fats.
Why Eggs Keep You Full
Eggs score about 50% higher on satiety measures than ready-to-eat breakfast cereal or white bread. That means they keep you feeling satisfied longer, calorie for calorie. The combination of protein and fat slows digestion, which helps prevent the blood sugar spike and crash cycle that leaves you reaching for a snack an hour later.
A study published in the International Journal of Obesity tested this in a practical way. Overweight adults who ate two eggs for breakfast as part of a calorie-controlled diet lost 65% more weight than those who ate a bagel breakfast with the same number of calories. They also saw a 61% greater reduction in BMI. The two breakfasts were matched for calories and weight, so the difference came down to how the body responded to the protein and fat in eggs versus the carbohydrates in the bagel.
Two large boiled eggs at breakfast give you about 156 calories and nearly 13 grams of protein. For context, that’s fewer calories than a single medium banana with a tablespoon of peanut butter, but with significantly more staying power.
Cholesterol: What the Guidelines Say
One large egg contains about 186 mg of cholesterol, all of it in the yolk. For years, that made eggs a target of dietary warnings. The science has shifted considerably. The American Heart Association’s 2026 dietary guidance statement notes that dietary cholesterol is no longer a primary target for heart disease risk reduction for most people. The statement specifically says that moderate egg consumption can be part of a heart-healthy diet.
The bigger concern, according to the same guidance, is what you eat alongside your eggs. Bacon, sausage, and other processed meats commonly paired with eggs at breakfast carry their own cardiovascular risks. Pairing your boiled eggs with vegetables, whole grains, or fruit keeps the meal in line with heart-healthy eating patterns.