How much protein in an egg, by size
A large egg has 6.3 g of protein (USDA): 3.6 g in the white, 2.7 g in the yolk. Protein by egg size, the cost-per-gram math, and how it ranks against other sources.
What people ask us next.
- How much protein is in one large egg?
- 6.3 g, per USDA FoodData Central (SR Legacy: 6.28 g of protein in a 50 g large egg). That egg is also 72 kcal with 4.8 g fat. The protein splits 3.6 g in the white and 2.7 g in the yolk. For quick math, use 6 g per large egg.
- How much protein is in two eggs?
- About 12.5 g for two large eggs (2 x 6.28 g). At ~144 kcal combined, that is a protein density of ~0.087 g/kcal, solid but not exceptional. Two eggs supply ~1.3 g leucine, below the ~2.5-3 g per-meal threshold Moore 2015 links to maximal muscle protein synthesis, so pair them with another source if the meal is meant to be anabolic.
- How much protein in 3 eggs vs a chicken breast?
- Three large eggs give ~18.8 g protein for ~216 kcal. A typical 150 g cooked chicken breast gives ~46 g protein for ~250 kcal (USDA: 30.5 g protein per 100 g cooked breast). The breast wins decisively on protein density, ~0.18 vs ~0.087 g/kcal. Eggs win on micronutrients (choline, B12) and cost per egg, not on grams of protein per calorie.
- Is the protein in the white or the yolk?
- Both, but more in the white. A large egg's white holds 3.6 g (~57%) and the yolk 2.7 g (~43%). Eating whites only keeps ~57% of the protein for ~24% of the calories, the rationale for white-only when cutting. The trade-off is the yolk's ~147 mg choline, lutein, vitamin D, and B12, which the white lacks.
- Does cooking change the protein content?
- Cooking does not destroy protein; the gram count is essentially unchanged from raw to scrambled, boiled, or fried. What cooking changes is digestibility: Evenepoel 1998 found cooked egg protein is ~91% absorbed versus ~51% for raw, because heat denatures the proteins and inactivates avidin and trypsin inhibitors. Eat eggs cooked to actually use the protein.
- How many eggs to hit a 30 g protein meal?
- About 5 large eggs (5 x 6.28 = 31.4 g), at ~360 kcal and ~930 mg cholesterol. That is a lot of calories and cholesterol for 30 g. The cost-effective move is 2-3 eggs (12.5-18.8 g) plus a lean add-on: Greek yogurt, cottage cheese, or a scoop of whey to clear the threshold without the calorie load.
- How much does egg protein cost per gram?
- At a warehouse 18-count around $4.50 ($0.25/egg), one large egg's 6.3 g protein costs ~$0.040/g. Bulk 60-count or sale eggs drop that to ~$0.020/g; pasture-raised cartons run ~$0.090/g. Eggs sit mid-pack: above whey concentrate (~$0.013/g) and bulk chicken (~$0.015/g), below most retail meat. See the full ranking in our 12 high-protein foods by $/g.
Every claim, cited.
- [01]USDA FoodData Central. Egg, whole, raw, fresh (SR Legacy 748967): 12.56 g protein per 100 g; 6.28 g per 50 g large egg.
- [02]USDA FoodData Central. Egg, white, raw, fresh (SR Legacy): ~10.9 g protein per 100 g, ~3.6 g per large-egg white.
- [03]USDA FoodData Central. Egg, yolk, raw, fresh (SR Legacy): ~15.9 g protein per 100 g, ~2.7 g per large-egg yolk.
- [04]Evenepoel P, Geypens B, Luypaerts A, et al. 1998. Digestibility of cooked and raw egg protein in humans as assessed by stable isotope techniques. J Nutr 128(10):1716-1722. Cooked egg protein ~91% absorbed vs ~51% raw.
- [05]Moore DR et al. 2015. Per-meal leucine threshold (~0.4 g/kg, ~2.5-3 g leucine) for maximal myofibrillar protein synthesis. J Gerontol A Biol Sci Med Sci 70(1):57-62.
- [06]FAO. 2013. Dietary protein quality evaluation in human nutrition: DIAAS and PDCAAS. Whole egg PDCAAS 1.0; cooked whole-egg DIAAS ~113.
- [07]USDA FoodData Central. Chicken, broilers or fryers, breast, meat only, cooked, roasted: 30.5 g protein per 100 g (for the egg-vs-breast comparison).
The Larderlab Team builds evidence-led frameworks for eating, lifting, and stocking a kitchen. We cite every claim. We publish the spreadsheet when possible. We buy what we review at retail price. When new data lands, we revise with a dated note.
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