Is there a way to 'size' an egg by its weight? My eight little girls began laying at the beginning of July, and I'd like to get an idea of how their eggs would be classified at the grocery store for when I sell them. I looked for an egg scale at the farm supply store, but was unable to find one. I have a food scale that measures ounces and grams, so I know that most of my girls lay 45-50 gram eggs, but I don't know how to translate that to a size. What is the standard weight range for medium, large, etc.?