Minecraft Tools
Three instant Minecraft calculators: how many stacks your inventory holds, how to place nether portals, and what your farm actually produces per hour.
Minecraft's math is simple but easy to mess up mid-play. Stack counting (64 items, 27-slot chests, 27-chest shulkers), the 8:1 nether coordinate ratio, and farm yield forecasts are all solved here in one place.
Overworld ↔ Nether behaviour runs both ways — the two lines below are mirror images.
How it works
Stacks: divide by the stack size (64; 16 for non-stackables like ender pearls). Chests hold 27 stacks; shulkers hold 27 chests.
Nether: divide Overworld X/Z by 8 (or multiply by 8 going back). The divide-by-8 eases it to make travel short.
Farm: items/hour × 24 gives the daily haul; converting to stacks/chests/shulkers tells you how much storage to build.
Example
1,728 items = 1728 ÷ 64 = 27 stacks = exactly one chest. A 18,000/h gold farm produces 432 shulkers in 24h — you'll need a serious sorting room.
The math behind it
stacks = ⌊items ÷ 64⌋ · nether = overworld ÷ 8 · shulkers/h = perHour ÷ (64×27×27)
Frequently Asked Questions
Why divide nether coordinates by 8?
The Nether is compressed 1:8 on the horizontal plane relative to the Overworld, so 8 blocks of overworld travel equal 1 nether block. Vertical (Y) is 1:1.
Do chests hold 27 stacks in every version?
Single chests hold 27 slots, double chests 54. In Java edition, note that non-stackable items (tools, potions) take one slot each regardless of stack size.
What's a shulker worth?
27 chest slots × 27 slots = 729 item slots. At 64 per stack that's 46,656 items per shulker box.