Farm Storage / Rate Calculator

How much storage and how many hopper lines a farm needs so it doesn't back up while you're away.

items/hr
hours
Item stack size
STORAGE NEEDED
7 double chests
Total items over duration24,000
Parallel hopper lines needed1
1 hopper line moves up to 9,000 items/hr (2.5 items/sec) into storage.
? How this is calculated
Total items = rate × duration. A double chest has 54 slots, so its capacity is 54 × stack size (3,456 at ×64, 864 at ×16) — total items divided by that gives the double chests needed. Separately, a single unmodified hopper line can only move about 9,000 items/hr; if your farm's rate exceeds that, you need that many parallel hopper lines feeding storage or the farm backs up regardless of chest space.