A single large chicken egg contains about 5 grams of total fat. Most of that fat sits in the yolk, and the majority of it is the unsaturated kind. The exact amount shifts depending on egg size, how you cook it, and what type of egg you buy.
Fat Breakdown in One Large Egg
Of the roughly 5 grams of fat in a large egg, here’s how it splits up:
- Saturated fat: 1.6 g
- Monounsaturated fat: 1.8 g
- Polyunsaturated fat: 1.0 g
That means about 58% of the fat in an egg is unsaturated. Monounsaturated fat, the same type found in olive oil and avocados, is actually the single largest fat fraction. Saturated fat makes up roughly a third of the total. For context, a tablespoon of butter has over 7 grams of saturated fat, so a single egg contributes a relatively small amount.
One large egg also contains about 200 mg of dietary cholesterol, all of it in the yolk. The American Heart Association’s 2026 dietary guidance notes that dietary cholesterol is no longer a primary target for heart disease risk reduction for most people, and that moderate egg consumption fits within a heart-healthy eating pattern.
How Egg Size Changes the Numbers
Egg size makes a meaningful difference if you’re tracking fat intake closely. Based on UK nutrition data (which uses slightly different size categories than the US), here’s how fat scales with size:
- Small egg (48 g): 3.7 g fat
- Medium egg (58 g): 4.6 g fat
- Large egg (68 g): 5.4 g fat
- Very large/jumbo egg (78 g): 6.2 g fat
A jumbo egg has nearly 70% more fat than a small one. If you eat two or three eggs at breakfast, the difference between medium and jumbo adds up to a few extra grams of fat per meal. US large eggs weigh about 50 grams and clock in closer to 4.8 g of fat, while UK “large” eggs are a bit bigger at 68 grams and 5.4 g of fat. If you’re using a nutrition tracking app, match the weight of the actual eggs you’re eating rather than just selecting “1 large egg.”
How Cooking Method Adds Fat
A hard-boiled egg contains about 5.3 grams of fat per large egg, essentially unchanged from raw because no cooking fat is added. A fried egg jumps to about 6.8 grams, picking up roughly 1.5 extra grams from the oil or butter in the pan. That’s a 28% increase just from the cooking method.
Scrambled eggs can absorb even more fat depending on how much butter, cream, or oil you use. Poached eggs, like boiled, cook in water and don’t gain any additional fat. If you’re trying to keep fat intake low, boiling or poaching is the simplest swap.
Omega-3 Enriched Eggs
Omega-3 eggs come from hens fed diets containing flaxseed or fish oil, and they do deliver more of those beneficial fats. Research published in the Journal of Animal and Feed Sciences found that hens fed fish oil and linseed produced eggs with nearly four times the DHA of standard eggs. DHA is the omega-3 fatty acid most closely linked to brain and heart health.
The total fat in an omega-3 egg stays roughly the same as a standard egg. What changes is the composition: a larger share of the polyunsaturated fat comes from omega-3s rather than omega-6s. If you’re buying omega-3 eggs specifically for the health benefit, they do deliver measurably more of those fats, though the absolute amounts per egg are still modest compared to a serving of salmon.
Egg Yolk vs. Egg White
Virtually all of the fat in an egg lives in the yolk. Egg whites contain trace amounts of fat, well under half a gram. If you eat only egg whites, you’re getting almost zero fat along with about 3.6 grams of protein per white. The tradeoff is that you also lose the yolk’s fat-soluble vitamins (A, D, E, and K) and its choline content.
The yolk’s fat serves a purpose beyond calories. About 72% of the phospholipids in egg yolk are a compound called phosphatidylcholine, which your body uses to build cell membranes and produce a neurotransmitter involved in memory and muscle control. Another 20% is phosphatidylethanolamine, which has been linked to improved cholesterol-clearing capacity in people with metabolic syndrome. These aren’t just “filler” fats.
Duck and Quail Eggs Compared
If you’re curious about eggs from other birds, the fat content per 100 grams is surprisingly similar across species. A comparative study measuring hen, duck, and quail eggs found roughly 13.2 grams of fat per 100 grams for all three types. The differences were statistically negligible.
The practical difference comes down to egg size. A single duck egg is larger than a chicken egg and contains more total fat simply because there’s more egg. A quail egg is tiny, so you’d need four or five to equal one chicken egg. Per gram, though, the fat content is nearly identical regardless of the bird.
Where Egg Fat Fits in Your Diet
For a 2,000-calorie diet, general guidelines suggest roughly 44 to 78 grams of total fat per day. A single large egg contributes about 5 grams, or somewhere between 6% and 11% of that daily range. Even a three-egg omelet, at around 15 grams of fat before any added oil or cheese, fits comfortably within most people’s daily budget.
The American Heart Association’s latest guidance positions eggs as a healthier protein swap for red and processed meat. Substitution analyses from large population studies found that replacing red meat or processed meat with eggs, poultry, legumes, or nuts was associated with lower coronary heart disease risk. So the fat in eggs matters less in isolation than what you’re eating them instead of.