How Much Protein Is in a Boiled Egg?
A large boiled egg has 6.3 grams of protein and 78 calories, according to USDA data. It’s a complete protein source with all nine essential amino acids, and cooking it actually makes that protein easier for your body to use than a raw egg. If you just needed the quick number, there it is — but stick around, because the full picture (sizes, counts, cooking methods, and daily limits) is more useful than a single stat.
How Much Protein Is in a Boiled Egg?
Here’s the short answer, straight from the USDA FoodData Central database:
- 1 large hard-boiled egg (50g): 6.3g protein, 78 calories, 5.3g fat
- Protein quality: Complete — PDCAAS score of 1.0, the highest possible
- Digestibility: Cooking denatures the egg’s protein, raising true protein digestibility from about 51% in raw eggs to about 91% in cooked eggs (Evenepoel et al., 1998)
That last point surprises most people. The heat of boiling changes the egg white’s protein structure (mainly a protein called ovalbumin), unlocking the amino acids inside. Boiling also destroys avidin, a protein in raw egg white that blocks your absorption of biotin (vitamin B7). So boiled eggs give you more usable nutrition than raw eggs — there’s no protein advantage to eating them raw.
For meal planners: two large boiled eggs give you 12.6g of protein for 155 calories, roughly what you’d get from a small chicken drumstick, but with zero prep beyond the boiling pot. You can calculate for any number of boiled eggs here.
Protein by Egg Size and Count
Egg sizes aren’t just about looks — a jumbo egg can pack nearly 60% more protein than a small one. The table below uses USDA boiled-egg values.
Boiled egg protein by size
| Egg size | Approx. weight | Protein | Calories |
|---|---|---|---|
| Small | 38g | 4.8g | 59 kcal |
| Medium | 44g | 5.5g | 68 kcal |
| Large | 50g | 6.3g | 78 kcal |
| Extra-large | 56g | 7.0g | 87 kcal |
| Jumbo | 63g | 7.9g | 98 kcal |
In the US, “large” is the standard grocery-store egg, so nutrition labels and recipes usually assume it.
Protein and calories in 1–6 large boiled eggs
| Boiled eggs (large) | Protein | Calories |
|---|---|---|
| 1 | 6.3g | 78 kcal |
| 2 | 12.6g | 155 kcal |
| 3 | 18.9g | 233 kcal |
| 4 | 25.2g | 310 kcal |
| 5 | 31.5g | 388 kcal |
| 6 | 37.8g | 465 kcal |
For context: a sedentary adult eating 2,000 calories a day needs about 50g of protein daily (FDA Daily Value). Three large boiled eggs get you nearly 40% of that for under 240 calories.
Soft-Boiled vs Hard-Boiled: Does It Change Protein?
No — the protein difference between soft-boiled and hard-boiled eggs is negligible. Both come from the same raw egg, and the USDA shows no meaningful change in protein content between boiling times. A soft-boiled egg with a runny yolk has essentially the same ~6.3g of protein per large egg as a fully set hard-boiled one.
What does change slightly is digestibility. A fully cooked (hard-boiled) egg white is marginally more digestible than a barely-set soft-boiled one, because the protein structure breaks down more completely. But the difference is small — a few percentage points at most. Pick whichever texture you enjoy; the nutrition is essentially identical.
One practical note: soft-boiled eggs, being less thoroughly cooked, carry a slightly higher food-safety risk (undercooked egg white can harbor bacteria). If you’re pregnant, elderly, immunocompromised, or serving young children, hard-boiled is the safer choice.
Boiled vs Other Cooking Methods
The egg itself carries 6.3g of protein — what changes between methods is mostly the added calories from butter, oil, or milk.
| Cooking method (1 large egg) | Protein | Calories |
|---|---|---|
| Boiled | 6.3g | 78 kcal |
| Poached | 6.3g | 71 kcal |
| Fried (in butter/oil) | 6.3g | 90 kcal |
| Scrambled (with butter & milk) | ~6.1g | ~91 kcal |
Boiled and poached eggs add no cooking fat, which is why they’re the leanest preparation. Frying and scrambling don’t destroy protein — the protein stays in the egg — but the added fats push calories up 15–20% for essentially the same nutrition. If you’re watching calories, boiling is hard to beat.
For a deeper dive into how every cooking method compares across egg types, see our egg protein guide.
Full Nutrition Breakdown of a Boiled Egg
Protein is just the headline. A boiled egg is one of the most nutrient-dense foods per calorie you can eat. Here’s the full USDA breakdown for one large boiled egg:
- Calories: 78
- Protein: 6.3g (13% DV)
- Total fat: 5.3g, of which 1.6g saturated
- Carbohydrates: 0.6g (virtually zero sugar, zero fiber)
- Cholesterol: ~186mg (62% DV)
- Choline: 147mg (27% DV) — critical for brain and liver function; eggs are one of the best dietary sources
- Vitamin B12: 0.56 mcg (23% DV) — supports red blood cell formation
- Vitamin D: ~44 IU (10% DV) — rare in non-fortified foods
- Selenium: 15.4 mcg (28% DV) — a powerful antioxidant mineral
- Riboflavin (B2): 0.26mg (20% DV)
- Vitamin A: ~260 IU (6% DV)
- Phosphorus: 95mg, Iron: 1.2mg, Calcium: 30mg
The nutrient most people overlook is choline — eggs supply about a quarter of your daily need in a single serving, and most adults don’t get enough.
How Many Boiled Eggs Should You Eat a Day?
For most healthy people, 1–2 boiled eggs a day is a perfectly reasonable habit, and many nutrition guidelines now consider up to 7 eggs per week fine as part of a balanced diet.
The cholesterol question is where the nuance lives. One boiled egg contains about 186mg of dietary cholesterol, and older guidelines warned against eating too many. But modern research has shifted the picture: for most people, dietary cholesterol has only a modest effect on blood cholesterol, because the liver adjusts its own production. Recent reviews find that moderate egg consumption (up to one egg daily) is not associated with higher heart disease risk in healthy adults.
That said, the caveat matters: if you have high LDL cholesterol, diabetes, heart disease, or your doctor has told you to limit cholesterol, talk to them before making eggs a daily staple. And remember that the rest of your plate counts — eggs with vegetables and whole grains is a very different meal than eggs with processed bacon and sausage.
FAQ
How much protein is in 2 boiled eggs?
Two large boiled eggs contain 12.6g of protein and 155 calories. That’s about 25% of the 50g Daily Value for protein — a solid breakfast or snack.
Do boiled eggs lose protein when cooked?
No — the opposite is true. Boiling doesn’t destroy protein; it denatures it, which makes your body better at digesting and absorbing it. Cooked egg protein is about 91% digestible compared to roughly 51% in raw eggs, and cooking also neutralizes avidin, which would otherwise block biotin absorption.
Are boiled eggs good for weight loss?
Yes, for most people. At 78 calories each, boiled eggs deliver a strong protein-to-calorie ratio, and high-protein foods keep you fuller longer, which can reduce snacking. Two boiled eggs (12.6g protein, 155 calories) is a classic weight-loss breakfast — just watch what you eat them with, since calories from butter, mayo, or fried sides add up fast.
Is it safe to eat boiled eggs every day?
For most healthy people, yes. Current research links moderate daily egg consumption (1–2 eggs) to no increased heart disease risk in healthy adults. The cholesterol caveat applies mainly to people with existing high LDL, heart disease, or diabetes — if that’s you, check with your doctor first.
This article is for informational purposes only and isn’t medical advice. If you have a health condition or specific dietary concerns, talk to a doctor or registered dietitian before changing your diet.