Calories in egg
Egg (whole, hard-boiled) contains 155 calories per 100g, with 12.6g of protein, 10.6g of fat and 1.1g of carbohydrates. One large egg (50g) comes to roughly 78 calories.
Calories by serving size
Based on 155 kcal per 100g (whole, hard-boiled).
| 1 medium egg (44g) | 68 kcal |
|---|---|
| 1 large egg (50g) | 78 kcal |
| 100g | 155 kcal |
| 3 large eggs (150g) | 233 kcal |
Full nutrition facts
Per 100g, whole, hard-boiled.
| Energy | 155 kcal |
|---|---|
| Protein | 12.6 g |
| Total fat | 10.6 g |
| Saturated fat | 3.3 g |
| Carbohydrate | 1.1 g |
| Sugars | 1.1 g |
| Fibre | 0 g |
| Sodium | 124 mg |
| Cholesterol | 373 mg |
| Potassium | 126 mg |
How this fits a day of eating
Two large eggs are about 155 calories, under 8% of a 2,000 calorie day, with roughly 13g of protein. Eggs are a moderate-calorie protein source rather than a very lean one, since fat supplies most of their energy, but they are filling, cheap and easy to portion accurately.
Cooking method matters more than the egg. A large egg fried in a teaspoon of oil or butter gains roughly 35 to 40 calories, so poached or boiled eggs are the easy default when calories are tight.
Common questions
How many calories are in one egg?
A large hard-boiled egg weighs about 50g without its shell and contains roughly 78 calories, 6g of protein and 5g of fat. A medium egg of about 44g is closer to 68 calories. Boiling and poaching add nothing, while frying adds whatever oil or butter stays in the pan.
Are eggs good for weight loss?
Eggs can support weight loss well. A large egg provides around 6g of high-quality protein for under 80 calories, and studies suggest egg-based breakfasts can keep people fuller than refined carbohydrate breakfasts with similar calories. Pairing eggs with vegetables adds volume to the meal without adding many calories.
Are the calories in an egg in the yolk or the white?
Most are in the yolk. The yolk of a large egg contains about 55 calories and nearly all of the fat, while the white contains roughly 17 calories and a little under 4g of protein. Egg whites are very lean, but the yolk supplies most of the vitamins, including vitamin D and choline.
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Nutrition values from USDA FoodData Central, FDC ID 173424, per 100g unless stated. Last reviewed 18 September 2026. Calorie needs vary by person.