Egg Sizes in Baking

When a recipe says two eggs, it almost always means two U.S. large eggs. That assumption works fine in a pan of brownies, but it can throw off a sponge, a choux paste or a batch of macarons, where egg is a major structural ingredient and a few grams change the batter. Egg sizes are graded by the weight of a dozen in the shell, so even eggs from the same carton can differ noticeably.

This guide gives working weights for each size without the shell, explains how to convert a recipe when you only have medium or jumbo eggs, and shows how to weigh and divide eggs so you can hit a target exactly. It also covers whites and yolks on their own, since many recipes call for them separately.

How eggs are graded by size

In the United States, egg size is set by the minimum weight of a dozen eggs in their shells, not by the size of each egg. A dozen large eggs must weigh at least 24 ounces, which averages out to about 57 g per egg including the shell. Medium, extra-large and jumbo follow the same logic at lighter and heavier thresholds.

The shell accounts for roughly 10 to 12 percent of that weight. Subtract it and you get the figures bakers actually use. Other countries grade differently, and a European or British large egg is often a touch heavier than an American one, which is one reason imported recipes can come out slightly wetter or drier than expected.

Working weights without the shell

These averages are rounded and practical. They assume the whole egg is cracked into a bowl, with the white and yolk together. Expect a spread of a few grams either side, especially in farm eggs that are not size-sorted.

If a recipe was written in grams, it will usually name the total egg weight, and you can ignore the count entirely. If it was written as a count, assume large eggs at 50 g each unless the author says otherwise.

• Medium: about 44 g whole
• Large: about 50 g whole (30 to 33 g white, 17 to 19 g yolk)
• Extra-large: about 56 g whole
• Jumbo: about 63 g whole
• Volume check: one large egg is a little under ¼ cup (about 3¼ tablespoons) once beaten

Converting a recipe to the eggs you have

Multiply the number of large eggs in the recipe by 50 g to get the target weight, then crack your eggs until you are close. Four large eggs call for about 200 g, which is roughly four and a half medium eggs or a little over three jumbo eggs. Beat the last egg in a cup and pour in only what you need.

In cookies, quick breads and most butter cakes, a swing of 5 to 10 percent in egg weight barely shows. In angel food cake, chiffon, genoise, popovers and choux paste, the eggs provide most of the structure or steam, so a heavy hand makes a batter runny and a light one leaves it tight or flat.

• 3 large eggs (150 g) = about 3½ medium or 2½ jumbo
• 6 large eggs (300 g) = about 7 medium or 5½ extra-large
• Recipe calls for 1 or 2 eggs: use whatever size you have

Weighing whites and yolks separately

Separate eggs while they are cold, when the yolk is firmer and less likely to break, then let the parts come to room temperature if the recipe needs them warm. Crack each white into a small cup before adding it to the main bowl so a broken yolk ruins only one white, not the whole batch. Even a trace of yolk fat can keep whites from whipping to full volume.

Macarons, meringues and angel food cake are usually written by white weight because it matters so much. Whites can be weighed into a lidded container and refrigerated for a few days until you have enough, which makes it easy to hit an exact figure. Yolks dry out quickly, so cover them closely and use them soon in custards, curds or enriched doughs.

Why older and fresher eggs behave differently

As eggs age, the white thins and the egg loses a little moisture through the shell, so an older egg can weigh slightly less and its white spreads more in the pan. Older whites whip a bit faster, while fresh whites form a more stable foam once they get going. For most baking the difference is minor, but it is another reason weight beats count in precise recipes.

Store eggs in their carton on a refrigerator shelf rather than in the door, where temperature swings are larger. Keep the refrigerator at 40°F (4°C) or below, and remember that batter containing raw egg and flour should not be tasted before it is baked.

Common questions

Can I swap two large eggs for two extra-large eggs?

Yes, in most everyday recipes. Two extra-large eggs add only about 12 g more than two large ones. That is well within the range a cookie dough or muffin batter can absorb without any other changes.

How do I use half an egg?

Whisk a whole egg in a cup until the white and yolk are fully blended. Then weigh or measure half, which is about 25 g or 1½ tablespoons for a large egg. Cover the rest, refrigerate it, and use it within a day or two in scrambled eggs or an egg wash.

Do carton liquid eggs measure the same as shell eggs?

Pasteurized whole liquid egg can stand in by weight: about 50 g, or a scant ¼ cup, per large egg. Carton egg whites usually whip less stiffly than fresh whites, so they suit cakes and doughs better than meringues and macarons.