I typically allow 300 - 350mm overhang for breakfast bar areas. You can get away with less but you'll be kicking the back of the units a bit more and may not be able to tuck stools away completely. Typical overhang of worktop on the door side is 20-25mm.
1 1 cup, uncooked equals 3 cups cooked. 2  1 cup, uncooked equals 3 cups cooked. 3  1 slice, dry equals 1/4 to 1/3 cup crumbs. 4  1 slice, soft equals 1/2 to 3/4 cup crumbs.  1 pound equals 3-1/2 to 4-1/2 cups shredded.
One pound of elbow macaroni is about 4 cups of dry pasta, so if your recipe called for 8 ounces of macaroni, you would need 2 cups. You can either measure two cups from your box, or (what I usually do) take a guess. If it's a 16-ounce box, I just try to estimate how much would be half of the box.