Hopper timing

[spartanwolf]

How long does it take for a hopper to empty its contents if ALL of its inventory if all the slots were full with 64 stacked items? this is the last question to my 100% automatic hemp farm/hemp fiber factory/automatic minecart pez collection, this is taking battosays automatic hemp farm/fiber production plant

[hawkcannon]

I think the hopper dumps 8 items per tick. There are 20 ticks per second, so the hopper drops 160 items per second. Hoppers have 18 slots, so it takes 7.2 seconds.