minecraft hopper recipe
The V-shaped hopper grid shows at the top of the tool, and the Materials tab adds the raw iron, the smelting and the chest logs for whatever amount you need.
The chest in the center, an ingot on each side and one below, plus the two ingots in the top corners. The bottom corners and the top middle stay empty.
That is 5 raw iron, which takes 5 smelts and 1 coal, plus 2 logs that become the 8 planks of the chest.
The 80 raw iron fill 1 stack and 16, and the 80 smelts take 10 coal. The 32 logs come to half a stack.
In the official record, the hopper appears in one derived recipe: the minecart with hopper. Craft the hoppers before you go after the rails.
It adds up what each item needs across all branches and only then rounds the number of crafts up. One log makes 4 planks; if you need 5, that is 2 logs and 3 planks left over. Leftovers show on the Materials tab and are reused by other items on your list before more raw material is requested.
It takes 5 iron ingots and 1 chest. In raw materials, that is 5 raw iron and 2 logs, since the chest asks for 8 planks.
You can make 12 hoppers. A stack holds 64 units, each hopper uses 5, and 12 hoppers use 60, leaving 4 raw iron over.
It is 10 coal, because 80 raw iron go through the furnace and each coal smelts 8 items. For a single hopper, 1 coal is enough.
Yes, in the minecart with hopper recipe, according to the official data. That is the only recipe that lists the hopper as an ingredient.