Weighted Inventory
by Mrbysco
Weighted Inventory limits how many inventory slots a player can use, and wearing armor raises that limit by armor type.
What it does
Weighted Inventory caps the inventory spaces a player has available. The cap rises with each armor piece worn, and the amount granted depends on the armor type: iron chainmail adds 2.25 slots in total (9 slots), gold, diamond and netherite add 6.75 slots in total (27 slots), and the other types fall in between. Each piece adds its share, so a full set of a given type sets the total.
The slot count per armor piece can be changed with datapacks, and the default values serve as the starting point for servers that want a different balance. The mod runs on Forge and NeoForge, is released under the MIT License and is open source. Its source code and issue tracker are public. Builds exist for 1.20.1, 1.21.1 and 26.1.2, and both the server and every player need it.
Key features
Armor-based slot grants
Wearing armor adds inventory slots, and the number depends on the armor type worn.
Different slot counts per type
Each armor type grants its own slot count, so heavier materials give a larger inventory.
Datapack-adjustable values
Slots per armor piece can be changed through datapacks, with the defaults used otherwise.
Full-set totals
Iron chainmail gives 9 slots in total, and gold, diamond and netherite give 27 slots in total, from the same pieces of armor.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival balance
Players who want armor to matter beyond protection can tie inventory size to the gear they carry.
Server rule sets
Server owners can adjust slot values with a datapack to match the progression of a modpack.
Who it’s for: Survival players and server owners who want the inventory to grow with the armor a character wears. Both the server and every player need the mod installed.
How it compares
Weighted Armors is a Forge mod for 1.20.1 under the MIT License, with a client and server environment, and it is not open source. Weighted Armor is server-side with an optional client part, is released under the GNU General Public License v3.0 only, covers 1.21.11 – 26.2 and is not open source. Expansion Cores runs on Forge and NeoForge across 1.20.1 – 26.2 under the MIT License, also needing both sides.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Weighted Inventory | Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-04-12 |
| Weighted Armors | Forge | 1.20.1 | Client and server | 2026-09-20 |
| Weighted Armor | Fabric, Forge, NeoForge and Quilt | 1.21.11 – 26.2 | Server required, client optional | 2026-07-03 |
| Expansion Cores | Forge and NeoForge | 1.20.1 – 26.2 | Client and server | 2026-09-10 |
Questions
Which loaders does Weighted Inventory support?
Does Weighted Inventory need to be installed on the server?
Can slot values be changed without editing the jar?
In the catalog
Weighted Inventory is one of 29,952 Game mechanics mods on ModsFinder, and one of 13,316 Game mechanics mods for Forge. 15,189 mods support Minecraft 26.1.2.
More from Mrbysco
Similar mods
What the author says
Weighted Inventory limits the amount of inventory spaces available to a player. Wearing armor will increase the number of available slots depending on the armor type. Different types of armor have different slot counts.
Official listing
- Modrinth page
- modrinth.com/mod/weighted-inventory
- Owner
- Mrbysco
- Published
- 2025-10-24
- Updated on Modrinth
- 2026-04-12
- Facts verified
- 2026-10-15