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Calories in an egg

There are on average between 55 and 80 calories in an egg depending on its size. For all sizes see below:

How many calories are there in an egg?

The calories in an egg will vary depending on the size and how it is prepared. However, on average a single medium-sized egg will contain around 65 calories, an average small egg will contain around 55 calories and an average large egg around 80 calories.

Most of these calories come from the yolk, which is the particularly nutrient dense part of the egg and includes many essential vitamins and minerals. Below is a list of full calorie values in various sizes of an egg.

Nutrition information

Per small egg (48g)

Per medium size egg (58g)

Per large egg (68g)

Per 100g

Energy kcal (calories)





Energy kJ





Eggs and dieting

Eggs are a great food to include in your diet if you’re trying to lose weight whilst ensuring your body gets all the essential nutrition it needs. Because eggs are nutritionally dense and contain fewer than 70 calories (medium-sized) they can be part of any calorie-controlled meals and snacks whilst still providing lots of protein and vital vitamins, minerals and fats.

The way you prepare your eggs will of course affect their nutritional value. For instance, if you fry an egg in fat, instead of boiling it, this will increase the number of overall calories. It is also important to eat your eggs along with other nutrient-rich foods, such as vegetables, salads and whole grains.

For more information on eggs and health, visit our health section or nutritional information page for more details on calories, fats and carbohydrates.

All information checked by an independent Registered Nutritionist/Dietitian

poached egg with tomatoes