Large chicken egg (US Grade A)

A US Large chicken egg weighs about 57 grams in the shell (roughly 50 g of edible egg) and measures around 57 mm long by 45 mm wide. US eggs are graded by weight per dozen, not by measuring each egg, so “Large” is a weight class.

This guide covers the large egg’s exact size and weight, the full US size scale from Peewee to Jumbo, why recipes assume a large egg, and how an egg compares to a golf ball and a US quarter.

Quick Answer: How Big Is a Large Egg?

A US Large egg is sold at a minimum of 24 oz per dozen, which is about 56.7 g per egg in the shell. Edible content is roughly 50 g (about 30 g white, 18 g yolk, 6 g shell). It is about 57 mm tall and 45 mm across at the widest point.

Chicken Egg Dimensions at a Glance

• Shape: an asymmetric oval, one end rounder than the other
• Length: 55 – 60 mm for a Large egg; width: 42 – 46 mm
• US grading: by minimum net weight per dozen, so individual eggs in a carton vary
• Contents of a Large egg: ~58% white, ~31% yolk, ~11% shell by weight
• Air cell: a small pocket at the round end that grows as the egg ages

What Does a Large Egg Look Like in Size?

A large egg fits in a closed hand with the ends showing between thumb and forefinger. It is a little longer than a golf ball is wide and about the same length as two US quarters side by side. Its 57 mm length is close to the short side of a matchbox.

6 Everyday Comparisons for a Large Egg

1. A golf ball (42.7 mm) is about 14 mm shorter than an egg is long and slightly narrower than the egg is wide.
2. A US quarter (24.26 mm): an egg is about 2.35 quarters long.
3. A ping-pong ball (40 mm) is shorter and rounder.
4. A AA battery (50.5 mm long) is about 6 mm shorter than a large egg.
5. A walnut in shell (about 40 – 45 mm) is a bit smaller.
6. A small lime (about 45 – 50 mm) is close in width, shorter.

Egg Size in Different Units

The US Egg Size Scale

Because the grade is a minimum weight for the whole dozen, eggs within a carton are not identical. The EU uses a similar four-class system (S, M, L, XL) with slightly different weight bands.

Why Recipes Assume a Large Egg

Baking recipes are written around the US Large egg (about 50 g of contents) because it has been the retail standard for decades. Substituting other sizes changes the liquid and structure: 4 Large eggs is roughly equal to 5 Medium, 4 Extra Large, or 3 Jumbo. For custards and cakes, matching the total egg weight matters more than the count.

Common Mistakes When Comparing Chicken Egg Dimensions

1. Assuming every egg in a Large carton weighs 57 g. The grade is a dozen-total minimum; individual eggs vary by several grams.
2. Quoting the shelled weight as the egg weight. A Large egg is ~57 g in the shell, ~50 g without.
3. Mixing up US and EU sizes. A EU “Large” (63 – 73 g) is closer to a US Extra Large.
4. Treating egg sizes as interchangeable in baking. Substitute by total weight, not by count.
5. Measuring the round end as the width. The widest point is near the middle, about 45 mm on a Large egg.

Frequently Asked Questions

How much does a large egg weigh?

About 57 g in the shell, roughly 50 g of edible egg.

How big is a chicken egg in mm?

A Large egg is about 57 mm long and 45 mm wide.

How are egg sizes graded in the US?

By minimum net weight per dozen, from Peewee (15 oz) to Jumbo (30 oz).

Is a US Large egg the same as an EU Large?

No. An EU Large (63 – 73 g) is closer to a US Extra Large.

How do I substitute egg sizes in a recipe?

Match the total egg weight; for example, 4 Large ≈ 5 Medium ≈ 3 Jumbo.

What is inside a large egg by weight?

Roughly 30 g white, 18 g yolk, and 6 g shell.

Final Takeaway

A US Large chicken egg weighs about 57 grams in the shell (50 g shelled) and measures roughly 57 x 45 mm. US eggs are graded by weight per dozen, not per egg, so a carton varies, and recipes assume the Large size, which is why substituting other sizes should be done by total weight.