Stack Size 1024
Stack Size 1024 raises the maximum stack size of normal Minecraft items from their vanilla values up to 1024 on Fabric, with the limit set through a settings screen.
What it does
Stack Size 1024 lets a player choose the maximum stack size for normal items, with options running up to 8192 and the vanilla value available as a choice. The settings screen is reached through Mod Menu, and the inventory slot limits rise together with the selected stack size. Items with special limits, such as tools and other single-count items, keep their own limits unchanged, so the mod only changes normal items.
The chosen value is applied to singleplayer worlds directly. On a multiplayer server, the server's value becomes the active one for every player who connects, and all of them work under that single limit. Many stack size mods only widen the number shown on screen, whereas this one also handles the save and load side, so larger stacks are not dropped and remain safe to use in the world.
The mod is client and server, so the server and every player need it, and it runs on Fabric only for 1.21 – 1.21.11 across 12 release versions. It is released under the MIT License and is not open source. The latest file is 1.0.1 for 1.21.11, published on 2026-04-25 on the beta channel.
Key features
Selectable stack size
Normal items can be set to a stack size chosen in the settings, with the vanilla value available alongside larger options.
Settings screen
A settings screen opened through Mod Menu holds the stack size choice, so no config file needs editing.
Matching slot limits
Inventory slot limits rise together with the selected stack size, so larger stacks fit into the inventory.
Save and load handling
Large stacks are validated during saving and loading, which prevents them from being skipped in the world data.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
FatStack is server-side only and open source under the Mozilla Public License 2.0, with files for 1.21.9 – 1.21.10, so players can join without installing it. Toaster's Stack Size Mod is client and server, open source under the MIT License and published for 1.21.5 – 1.21.11. Data Driven Stack Sizes is server-side only, not open source, and covers 1.21 – 1.21.4, with its license under Creative Commons Attribution Non Commercial Share Alike 4.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Stack Size 1024 | Fabric | 1.21 – 1.21.11 | Client and server | 2026-04-25 |
| FatStack | Fabric | 1.21.9 – 1.21.10 | Server-side only | 2025-10-19 |
| Toaster's Stack Size Mod | Fabric | 1.21.5 – 1.21.11 | Client and server | 2026-01-17 |
| Data Driven Stack Sizes | Fabric | 1.21 – 1.21.4 | Server-side only | 2025-03-15 |
Questions
Does Stack Size 1024 need to be installed on both sides?
Which game versions does Stack Size 1024 support?
Does the mod change tools and other special-case items?
In the catalog
Stack Size 1024 is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from makarkozyrev14
Similar mods
What the author says
Choose the maximum stack size for normal Minecraft items on Fabric 1.21.11, from the vanilla value up to 8192. This mod is made for players who want larger, cleaner storage without changing every special-case item in the game.
Official listing
- Modrinth page
- modrinth.com/mod/stack-size-1024
- Owner
- makarkozyrev14
- Published
- 2026-04-10
- Updated on Modrinth
- 2026-04-25
- Facts verified
- 2026-10-15