Egg size conversion, by weight
3½ medium eggs
An amount, with decimals or fractions — 1, 2.5 or 1 1/2.
3 large eggs weigh about 150 g out of the shell (170 g in it) and match about 3½ medium eggs by weight.
Source: USDA AMS, United States Standards, Grades, and Weight Classes for Shell Eggs, read Oct 5, 2026. Out of the shell: USDA FoodData Central, Egg, whole, raw, fresh (SR Legacy, FDC ID 171287), read Oct 20, 2026.
USDA sizes eggs by the minimum weight of a whole dozen, not each egg: a dozen Large must reach 24 ounces, a dozen Medium 21, a dozen Jumbo 30. That works out to roughly 56.7 g per Large egg in the shell and 49.6 g per Medium, so a recipe written for Large eggs needs a few extra Medium ones. 3 large eggs come to about 170 g, or 3½ medium eggs by weight; weigh the total when it has to be exact.
How the conversion is worked out
- USDA weight classes are the minimum net weight per dozen: Jumbo 30 oz, Extra Large 27, Large 24, Medium 21, Small 18, Peewee 15.
- Per egg in the shell that is about Jumbo 70.9 g, Extra Large 63.8, Large 56.7, Medium 49.6, Small 42.5, Peewee 35.4.
- Sizes are matched by weight, so the counts are rounded to the nearest quarter egg; use whole eggs and weigh the total for precision.
- Large is the default size in US recipes. Out of the shell, USDA FoodData Central weighs one egg at Jumbo 63 g, Extra Large 56, Large 50, Medium 44 and Small 38; a Large egg is about 33 g white and 17 g yolk.
- The shell is roughly a tenth of the egg, which is why a Large egg is 56.7 g on the scale whole and 50 g once cracked.
- The weight per dozen is a legal minimum, so a carton usually runs a little heavier than these figures.
USDA egg weight classes, in the shell and out of it
The minimum net weight a dozen must reach and that figure divided by twelve for one egg in the shell (USDA AMS); then what one egg weighs cracked, white and yolk together (USDA FoodData Central), and three of them, the count most recipes ask for. FoodData Central lists no Peewee portion.
| Size | Min per dozen | Per egg (oz) | Per egg (g, in shell) | Per egg (g, out of shell) | 3 eggs (g, out of shell) |
|---|---|---|---|---|---|
| Jumbo | 30 oz | 2.50 oz | 70.9 g | 63 g | 189 g |
| Extra large | 27 oz | 2.25 oz | 63.8 g | 56 g | 168 g |
| Large | 24 oz | 2.00 oz | 56.7 g | 50 g | 150 g |
| Medium | 21 oz | 1.75 oz | 49.6 g | 44 g | 132 g |
| Small | 18 oz | 1.50 oz | 42.5 g | 38 g | 114 g |
| Peewee | 15 oz | 1.25 oz | 35.4 g | — | — |
Where these numbers come from
The figures are USDA AMS, United States Standards, Grades, and Weight Classes for Shell Eggs (USDA AMS), read on October 5, 2026. What this page takes from it: Minimum net weight per dozen by size class — Jumbo 30 oz, Extra Large 27, Large 24, Medium 21, Small 18, Peewee 15 — which is the per-egg weight in the shell by size. The numbers are copied as published; the calculator converts your amount to the same weight in the other option.
The weights out of the shell are USDA FoodData Central, Egg, whole, raw, fresh (SR Legacy, FDC ID 171287) (fdc.nal.usda.gov), read on October 20, 2026. From it: Weight of one egg out of the shell by size — Jumbo 63 g, Extra Large 56, Large 50, Medium 44, Small 38 — from the food portions of FDC ID 171287.
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