Minecraft Stack Calculator
Turn a pile of items into stacks — and see how many shulker boxes and chests they fill — for any stack size (64, 16 or 1).
Minecraft Stack Calculator
A shulker box holds 27 stacks; a single chest 27 slots; a double chest 54. 🔒 Calculated in your browser.
🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.
Features
Items → stacks instantly
Enter any number of items and get the full stacks plus the leftover, for 64, 16 or 1-stacking items.
Storage planning
See how many inventory slots, shulker boxes and double chests the items need.
Any stack size
Switch between 64, 16 and 1 to match the item you're counting.
Instant and private
Recalculates as you type; nothing is uploaded.
How it works — in four simple steps
No signup, nothing to install — it all runs in your browser.
Enter the item count
Type how many items you have.
Pick the stack size
64 for most blocks, 16 for pearls/signs, 1 for tools and armour.
Read the stacks
See the full stacks, remainder and slots used.
Plan storage
Use the shulker-box and chest figures to plan your storage.
How it works
In Minecraft, most items stack to 64 per slot, some (like ender pearls, snowballs and signs) to 16, and things like tools, armour and potions don't stack at all (1). Working out how many stacks a big number of items makes — and how much storage that needs — is quick maths this tool does for you.
Enter the number of items and the stack size, and it shows the full stacks (plus any remainder), the total inventory slots needed, and how many shulker boxes (27 stacks each) and double chests (54 slots) that fills. Handy for planning storage, trades, or how much you've mined.
It all runs in your browser.