Egg sizes

I thought a large egg was a large egg, but when I was in the US I pulled out my mom's eggs and was surprised at how small they were. Is a large US egg the same size as a UK medium egg? I wouldn't care, but I know this can make a difference when baking.

Yay Wikipedia!  Looks like Large US eggs are about the same size as medium UK eggs.  Good eye, I never really noticed anything (except when you move up to the XL/V. Large category.

http://en.wikipedia.org/wiki/Egg_%28food%29#Chicken_egg_sizes

Modern Sizes (USA)
Size - Mass per egg
Jumbo - Greater than 2.5 oz. or 71g
Very Large or Extra Large (XL) -  Greater than 2.25 oz. or 64g
Large (L) - Greater than 2 oz. or 57g
Medium (M) - Greater than 1.75 oz. or 50g
Small (S) - Greater than 1.5 oz. or 43g
Peewee - Greater than 1.25 oz. or 35g


In the United Kingdom, modern egg sizes are defined as follows:
Modern Sizes (UK)
Size - Mass per egg
Very Large - 73g and over
Large - 63-73g
Medium - 53-63g
Small - 53g and under

Cool! Thanks Carrie! 

Kinda like dress sizes. 

That is REALLY interesting, and may well account for why my choc-chip cookies occasionally turn out badly.  I always assumed it's because I just eyeball the butter - chop a bit off a 250g block to get 2 sticks - but I've been using large eggs!

Same with me. I've been using large eggs for everything. Fortunately, nothing's been bad enough that I had to sacrifice it! I've managed to cram down those sub-par cookies!

I've managed to cram down those sub-par cookies!

LOL!  Me, too! 

So medium eggs are the way to go for US recipes?  Seems backwards, as usually everything in the US is larger!  Cool, I've been doing it right all along .