Eggs: milliliters to US cups

Eggs are unusual among baking ingredients because they are sold by count, not by weight, and the count is calibrated to a specific size grade. American recipes assume a USDA Large egg, which weighs approximately 50 grams without the shell. European recipes assume a UK or EU Medium or Large, which is similar but not identical. Asian and South American recipes vary more, with some markets selling eggs at sizes Americans would call small.

This matters for baking because the egg contributes structure, moisture, and emulsification, all of which scale with mass. A recipe calling for 4 large eggs expects roughly 200 grams of total egg, of which 120 grams is white and 80 grams is yolk. Substituting jumbo eggs at 63 grams each gives you 252 grams, a twenty-five percent increase that will make a custard runnier, a meringue heavier, and a cake denser.

The most common conversion mistake with eggs is using extra-large or jumbo eggs in a recipe written for large, without adjusting. Most recipes will tolerate one extra-large egg in place of a large egg in a four-egg formula, but four extra-large for four large is a meaningful change. The reverse, using medium eggs where the recipe calls for large, is also detectable but less destructive because the recipe ends up slightly drier rather than slightly wet.

The fix when egg sizes do not match is to weigh. One large egg without shell is 50 grams. If the recipe calls for 3 large eggs, that is 150 grams of egg. Crack eggs into a separate bowl, weigh, and pour off any excess into a coffee. This is also the right approach when a recipe calls for 2.5 eggs, which happens in scaled or halved recipes. Crack three eggs, weigh out 125 grams, and use what is needed.

Egg whites and yolks are different ingredients with different roles. The white is around 90 percent water and 10 percent protein, with a density just slightly above water at 1.038 g/ml. The yolk is around 50 percent water, 30 percent fat, 16 percent protein, and 4 percent everything else, with a density of approximately 1.030. By weight, a large egg is 60 percent white and 40 percent yolk, but by volume the proportions shift slightly because the yolk is denser.

Recipes that specify "1 cup of egg whites" expect 244 grams, which is roughly 8 large egg whites. Recipes that specify "1 cup of egg yolks" expect 244 grams, which is roughly 12 large yolks because each yolk is smaller than each white. The difference is meaningful in pavlova and angel food cake, where small white volume errors propagate into structural failures.

Density matters most for eggs in custards, where the ratio of egg to liquid determines the set point and texture, and in cakes, where the egg-to-flour ratio determines the structure. A creme brulee made with 4 large yolks per cup of cream has a different texture than the same recipe made with 4 jumbo yolks. A genoise depends on the egg foam holding air through baking, and the foam volume scales with egg weight, not count.

Pasteurized liquid egg products sold in cartons are useful when you need precise weight measurements without the variability of individual eggs. These products specify the gram weight per fluid ounce on the carton, typically around 30 grams per ounce, which converts to 240 grams per US cup. Liquid egg products are slightly denser than fresh eggs because they include a small amount of stabilizer and have been homogenized.

Egg substitutes, including flax egg and chia egg, do not match the density of real eggs and do not function the same way in recipes. Flax egg is roughly the same total mass for a one-egg replacement (1 tablespoon flax meal plus 3 tablespoons water gives about 50 grams), but the texture and binding behavior are quite different. Use substitution charts, not direct density conversions, when working with egg replacements.

The countWeightGrams value for this ingredient is 50, calibrated to USDA Large. Egg size selection is available in the calculator.