★ REFERENCE TABLE · FOOD · BAKING
Recipes assume Large eggs — your fridge may disagree. A recipe calling for 3 Large eggs needs 2.4 Jumbo eggs, 3.4 Medium eggs, or 4.9 Peewee eggs by weight, because egg sizes differ by up to 36 grams per egg. The chart below gives the real USDA weights, and the calculator converts any Large-egg recipe into the size you actually have.
Nearly every published recipe is written for Large eggs, the standard size. If your carton holds another size, swapping one-for-one changes the batter: too much egg makes a cake rubbery, too little makes it dry. Match the weight, not the count, and the recipe behaves as written.
USDA egg sizes are weight classes, measured shell-on per egg: Jumbo 71 g, Extra-Large 64 g, Large 57 g, Medium 50 g, Small 43 g, Peewee 35 g. Per dozen those are 30, 27, 24, 21, 18, and 15 ounces. The substitution rule is weight for weight: total grams = recipe Large count × 57, and equivalent count = total grams ÷ the chosen size's weight, shown to one decimal place. The practical whole-egg note rounds that figure to the nearest whole egg, because nobody cracks 0.4 of an egg into a cake without a scale — and when the recipe is fussy, weighing the eggs beats counting them.
Setup: a recipe calling for 3 Large eggs, and a carton of Jumbo eggs.
Line 1 — total weight. 3 × 57 g = 171 g of egg.
Line 2 — equivalent count. 171 ÷ 71 = 2.4 Jumbo eggs.
Line 3 — practical whole eggs. 2.4 rounds to 2 whole Jumbo eggs — or weigh out 171 g exactly for a sponge, custard, or soufflé, where the egg ratio decides the result.
Line 4 — the full row. The same 3 Large eggs equal 2.7 Extra-Large, 3.0 Large, 3.4 Medium, 4.0 Small, and 4.9 Peewee eggs. Notice the spread: the wrong size in either direction is a whole egg off.
| Size | Weight per egg (shell-on) | Per dozen | 3 Large eggs equal |
|---|---|---|---|
| Jumbo | 71 g (2.50 oz) | 30 oz | 2.4 eggs (2 whole) |
| Extra-Large | 64 g (2.25 oz) | 27 oz | 2.7 eggs (3 whole) |
| Large | 57 g (2.00 oz) | 24 oz | 3.0 eggs (3 whole) |
| Medium | 50 g (1.75 oz) | 21 oz | 3.4 eggs (3 whole) |
| Small | 43 g (1.50 oz) | 18 oz | 4.0 eggs (4 whole) |
| Peewee | 35 g (1.25 oz) | 15 oz | 4.9 eggs (5 whole) |
2 Large eggs, Medium carton. 2 × 57 = 114 g; 114 ÷ 50 = 2.3 Medium eggs (2 whole). A two-egg omelette barely notices; a two-egg cake does.
2 Large eggs, Small carton. 114 ÷ 43 = 2.7 Small eggs (3 whole). Small eggs are the sneaky one: one-for-one leaves you a quarter of an egg short per egg.
6 Large eggs, Peewee carton. 6 × 57 = 342 g; 342 ÷ 35 = 9.8 Peewee eggs (10 whole). At this scale, counting without converting is a ruined recipe — nearly four eggs' worth of difference.
6 Large eggs, Jumbo carton. 342 ÷ 71 = 4.8 Jumbo eggs (5 whole). Going the other way, one-for-one would add more than a whole extra egg of batter.
| Output | Formula | What it means |
|---|---|---|
| Total egg weight | Large count × 57 g | 171 g at the defaults — the weight the recipe actually wants. |
| Equivalent count | Total grams ÷ chosen size weight | 2.4 Jumbo eggs at the defaults, to one decimal place. |
| Whole-egg note | Equivalent count rounded to nearest whole | 2 whole Jumbo eggs at the defaults — what you actually crack. |
USDA weights are minimum weights per dozen for each size class, so individual eggs vary: a carton labelled Large averages about 57 g per egg, but any single egg may be a few grams either way. The weights are shell-on; cracked-out egg is roughly 88% of the shell-on weight, which matters only if you weigh cracked eggs directly — in that case weigh 150 g of cracked egg for 3 Large eggs, not 171 g. The whole-egg rounding note is a practical shortcut, not a guarantee: for egg-critical recipes (sponge, soufflé, custard, meringue) always weigh. For forgiving recipes (meatloaf, pancakes, scrambled eggs) the nearest whole egg is plenty. Error policy: empty, zero, or out-of-range counts and unknown sizes are reported as errors rather than converted.
Bright Side Kit. "Egg Size Chart & Substitution Calculator." https://brightoolbox.com/egg-size-chart/ Accessed October 24, 2026.Large, almost always. Standard recipe testing uses Large eggs at 57 g each. If a recipe does not name a size, assume Large and convert from there.
Only between neighbours, and only in forgiving recipes. Large to Extra-Large one-for-one is a 12% difference; Large to Peewee one-for-one is a 39% shortfall. In cakes and custards, that difference shows.
Because weight, not count, is the real ingredient. The decimal is the exact weight match; the whole-egg note next to it tells you what to actually crack. Weigh the eggs when the decimal matters.
The chart weights are shell-on. If you weigh cracked eggs, use about 88% of the shell-on figure: 150 g cracked for 3 Large eggs, not 171 g.
The smallest USDA size, 35 g per egg. Peewee eggs come from young hens and are rarely sold in supermarkets, but backyard flocks produce them regularly.
Yes — this chart is USDA sizes. The EU grades by weight bands too, but the band edges differ slightly. If your carton uses EU sizing, weigh a few eggs and use the weight directly.
A little, for eggs cooked in the shell. Jumbo eggs need about a minute longer to soft-boil than Large ones. In baked recipes, size affects moisture and structure, not oven time.
Approximately: a Large white is about 33 g and a yolk about 18 g. Scale those by the same size ratio — a Jumbo white is roughly 41 g — but weigh separated eggs for meringues, where precision matters most.