How Many Calories in a Boiled Egg? Exact Nutrition Facts

By Dr. Dave Patel · Published March 11, 2025 · 6 min read

A large hard-boiled egg contains 78 calories — making it one of the most calorie-efficient sources of complete protein available. If you're asking how many calories in a boiled egg, the answer hinges on two things: the size of the egg and which part you're eating. This article breaks it all down with precise figures, so you know exactly what you're getting.

Calories in a Boiled Egg by Size

Egg size is the primary variable in calorie count. All figures below are for whole eggs cooked in water with no added fat, based on USDA FoodData Central data:

Most supermarket cartons are labeled large. When a nutrition label or recipe says "1 egg," the 78-calorie figure is the assumed standard. If you want exact numbers, weigh your eggs — the USDA baseline is 155 kcal per 100g of cooked whole egg.

Hard-Boiled vs. Soft-Boiled: Does It Matter?

No. The length of cooking time changes the texture of the yolk but not the calorie count. A 3-minute soft-boiled egg and a 12-minute hard-boiled egg contain identical calories because no fat is added during either method.

The preparation method that actually raises calories is frying. Cooking a large egg in a teaspoon of butter adds roughly 35–45 calories, taking the total from 78 to approximately 115 calories. Poaching, like boiling, adds zero.

Egg White vs. Egg Yolk: Calorie Split

The caloric split between white and yolk surprises most people. The yolk holds the majority of the egg's calories — and nearly all of its fat.

The yolk accounts for roughly 70% of the egg's calories but also carries all of the fat-soluble vitamins — A, D, E, and K — as well as choline and lutein. Discarding the yolk saves 55 calories but removes the majority of the egg's micronutrient value. Whether that trade-off makes sense depends on your goals and your overall dietary context. For a broader look at how nutrient sources differ, see our article on whether all calories are the same.

Complete Nutrition Profile

Calories tell only part of the story. A single large boiled egg is a micronutrient powerhouse. Here is the full breakdown per large egg (50g), sourced from USDA data:

Two micronutrients stand out:

• Choline (147mg, 27% DV) — Eggs are the top dietary source of choline in the U.S. diet. Choline is essential for liver function, nerve signaling, and fetal brain development.
• Selenium (15mcg, 28% DV) — One egg provides more than a quarter of your daily selenium requirement, supporting thyroid function and antioxidant defense.

The high cholesterol number (187mg per egg) concerns some people. Current evidence from the American Heart Association shows that for most healthy adults, dietary cholesterol from whole eggs has a modest effect on blood cholesterol levels — particularly compared to saturated fat intake. For most healthy people, one egg per day fits within a heart-healthy diet.

Boiled Eggs and Weight Loss

Boiled eggs are one of the most effective foods for managing hunger on a calorie deficit. A 2023 systematic review published in Nutrients confirmed that egg-based breakfasts suppress the hunger hormone ghrelin and increase satiety hormones, leading to lower calorie intake at subsequent meals.

Three reasons boiled eggs support a calorie deficit:

1. High protein-to-calorie ratio. 6.3g of protein for 78 calories is a ratio most whole foods cannot match.
2. No added fat. Unlike fried or scrambled eggs made with butter, boiled eggs are cooked in water — the calorie count stays predictable.
3. Portable and lasting. Hard-boiled eggs keep for up to five days in the refrigerator, making them one of the easiest high-protein snacks to prep in advance.

For more on structuring meals around eggs, see our egg diet for weight loss guide. To calculate how many calories you should be eating in a day, start with our guide on daily calorie targets.

Understanding your daily protein requirements also helps you determine how many eggs to include without overshooting fat or cholesterol intake.

Frequently Asked Questions

How many calories are in a boiled egg?

A large hard-boiled or soft-boiled egg has 78 calories. The count scales with egg size: small (~54 kcal), medium (~63 kcal), extra-large (~90 kcal). Cooking time does not affect calories — only the yolk texture changes.

How many calories are in 2 boiled eggs?

Two large boiled eggs provide approximately 156 calories, 12.6g of protein, and 10.6g of fat. That is a high-protein breakfast or snack with less than 1.5g of carbohydrates.

Is removing the yolk worth the calorie saving?

The white of a large egg has just 17 calories versus the yolk's 55. That saving is real. However, the yolk is also where vitamin D, choline, selenium, and all fat-soluble vitamins are concentrated. If your goal is calorie reduction without losing nutrition, keeping the whole egg and adjusting another part of your diet is usually a better strategy.

Are boiled eggs keto-friendly?

Yes. A large boiled egg has only 0.6g of carbohydrates. Eggs are a cornerstone of low-carb and ketogenic diets because they are filling, nutritionally complete, and virtually carb-free.

How many boiled eggs can I eat per day?

For most healthy adults, 1–3 whole eggs per day fits within a balanced diet. Several large studies have found no increased cardiovascular risk at that level for healthy individuals. People with heart disease, diabetes, or familial hypercholesterolemia should follow their doctor's guidance.

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