Inventory Stack Calculator
Enter the items you want to store, their quantities, and how many fit in a stack. This worksheet counts full stacks, partial stacks and occupied slots, then calculates how many containers you need when different items can share a container. Every stack size and container capacity is yours to choose.
Each row keeps its own stacks. Matching labels and partial stacks are never merged automatically. You choose every stack size; no game item rules are looked up.
Item 1
200 items = 3 × 64 + 8. The remainder occupies one additional slot.
Item 2
1,536 items = 24 × 64 + 0. There is no partial stack.
Last shared container
1 of 27 slots occupied.
This diagram counts occupied slots; it does not assign particular items to positions or simulate a game inventory.
Totals and packing arithmetic
Total items: 1,736
For each row: full stacks = floor(quantity ÷ stack size). Remainder = quantity mod stack size. Slots = full stacks + 1 when there is a remainder.
Shared containers = ceiling(28 ÷ 27) = 2.
Unused slots = 2 × 27 − 28 = 26.
If each item row reserves its own containers: 2 containers total. This sums the per-row container counts and can be larger than sharing container slots.
Pure count arithmetic; no game recipe database, account lookup or assertion about a version’s item rules. Calculations use exact whole-number arithmetic up to 30 input digits. Your worksheet stays in memory and is not uploaded or automatically saved. Download the CSV before leaving; undo retains 30 edits.
Common questions
- How many stacks are 200 items at 64 items per stack?
- 200 ÷ 64 gives 3 full stacks with 8 items left over. The remainder needs another slot, so the total is 4 occupied slots. In a 27-slot container, those four slots fit in one container.
- How many 27-slot containers hold 28 occupied slots?
- Two containers are needed: one with 27 occupied slots and another with 1. Across the two containers, 26 slots remain unused. The tool rounds container counts up rather than discarding the partial container.
- Why can shared containers differ from the per-item container total?
- Shared storage adds all occupied slots first and rounds up once. Per-item reserved storage rounds each row’s container count up separately. Two different items that each occupy one slot can share one 27-slot container, but reserving a whole container for each would require two.
- Can I use this as a Minecraft stack calculator?
- Yes, if you enter the quantities, stack limits and storage-slot counts that apply to your items and game version. Values such as 64, 16 or 1 can be entered as a stack size. The tool does not look up item rules, recipes or accounts, so the values you supply determine the result.
- Are matching items or partial stacks merged automatically?
- No. Each worksheet row is independent, even when two rows have the same label. Each nonempty partial stack uses its own slot. If two rows really represent stack-compatible items, combine their quantities in one row yourself before calculating.
- What happens with zero quantities, large numbers or decimals?
- Zero quantity uses no stacks, slots or containers. A stack size of one treats each item as its own full stack. Inputs accept up to 30 digits and calculations use exact integer arithmetic. Negative numbers, decimals, scientific notation and zero stack sizes or container capacities are rejected.
- What does the CSV include, and is my worksheet saved?
- The CSV contains per-item counts, shared and reserved container totals, unused slots and the packing assumptions. Formula-like item labels are prefixed with an apostrophe. Spreadsheet programs may round very long numeric values on automatic import, so import those columns as text. The worksheet is not uploaded or automatically saved; download it before leaving. Undo and redo retain 30 edits.
Pure count arithmetic; no game recipe database, account lookup or assertion about a version’s item rules.