Max stack size 99 is a practical Minecraft datapack for Java Edition that raises the standard item stack limit from 64 to 99. It changes a familiar inventory rule without adding new blocks, items, dimensions, or quests, making it a lightweight gameplay adjustment for survival, adventure, and building focused servers.
With more items fitting into each slot, chests, shulker boxes, and player inventories become easier to manage during mining, exploration, and large building projects. The result is less clutter and fewer duplicate stacks, while the core vanilla experience remains intact. At BoxToPlay, we recommend it for any Minecraft server seeking a simple quality of life improvement.
Create your Minecraft server and install the Max stack size 99 datapack with one click.