Yes
according to the conversion chart at http://southernfood.about.com/library/info/blequiv.htm, 12 cups=24 oz
16
1/2 cup
There is a 1/3 cup of packaged bread crumbs in 40 grams. There is 2/3 cup of fresh bread crumbs in 40 grams.
If your recipe asks for cubed day old bread, it would be best to use it. It helps to bind the meat together and gives it extra bulk. Dry bread crumbs aren't quite as good. If you need to use bread crumbs, use 1/2 cup per slice of bread. Another source points out that 4 ounces of bread equals 3 cups of soft crumbs so according to this you would need 4 ounces of crumbs. One ounce of bread crumbs is 1/4 cup (or 28g) so four ounces of bread crumbs would be 1 cup. In using a substitution like this, it is always best to watch carefully to make sure you are not drying out your recipe too much. Substitutions may not always be accurate for your particular recipe or ingredients.but if your making stuffing use french bread dry it the laundy room and put a lot of sage Unless your being creative I wouldn't suggest replacing bread crumbs with cubed day old bread. It will give you a much different result. One easy solution is to lightly toast some slices of bread then cut it into cubes. As mentioned above French Bread or actually any type you really like can give you some great results.
It is difficult to provide an exact conversion since the density of the cookie crumbs can vary. However, as a rough estimate, 3 grams of cookie crumbs would be approximately 0.012 cups.
Elsewhere on the net it says that 2 slices = 1 cup cubed. So 5 slices would be 2 1/2 cups of cubed bread.
One cup = 8 Fl. oz. = 226.8 g Remember that you can only convert fluid ounces this way. One cup of feathers is going to weigh a lot less than one cup of nails. Dry ingredients have to be converted differently according to their weight. The only way to figure out how many cups 4 oz. of dried bread crumbs would be is to actually weigh out 4 oz. of bread crumbs and pour those bread crumbs into measuring cups and figuring it out that way. Sorry this doesn't answer your question. I just felt the need to correct the previous answer that was incorrect.
About 2 cups
1 It would also be helpful to know what a cup of graham cracker crumbs weighs. My box of crackers is 14.4oz. I could estimate what portion of the box to use if I know how much a cup of crumbs weighs.
According to Cook's Thesaurus http://www.foodsubs.com/Crumbs.html 14 graham crackers = 1 Cup crumbs so, 12 graham crackers = 3/4 C + 1 Tbs (approximately)