Warfactory Ultimate Weight
Warfactory Ultimate Weight gives every item in the inventory a weight, with movement and stamina penalties that grow as the load increases.
What it does
Each item carries a configurable weight, and the total of the inventory determines how heavy a player is. Items inside modded storage count by their contents, and worn equipment in Baubles or Curios slots is counted as well. Items that expose the standard item-handler capability are handled automatically, while other modded storage gets dedicated handling. A hard-lock threshold can block pickups and transfers once the load passes a set point.
The mod reduces jump height and slows movement when the weight rises, and a stamina system drains faster under a heavy load. The inventory tooltip and a HUD display show the current weight. Inventory tracking uses delta-based updates where supported, so the mod avoids iterating over the whole inventory on each change. Config values sync from server to client.
Installation is required on both sides: the server and every player need the mod. Warfactory Ultimate Weight is published for Fabric, Forge and NeoForge for 1.21.1, with builds for 1.12.2 and 1.20.1 as well, and is released under the GNU General Public License v3.0 or later, so the code is open source.
Key features
Configurable item weights
Each item's weight can be set in the configuration, and modded storage items scale with the items they hold.
Weight-based movement penalties
Jumping and walking slow as the carried weight grows, and a hard-lock threshold stops new pickups and transfers.
Stamina with weight-aware drain
A stamina bar drains faster when the inventory is heavy, adding a cost to carrying large loads over distance.
HUD and tooltip display
The current weight appears on the HUD and in item tooltips, so the load is visible during play.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
MT Inventory Weight is open source under the CC0 1.0 Universal license and runs on Fabric, Forge and NeoForge for 1.20 – 26.1.2. eZWeight is not open source, is released under All rights reserved, and covers Forge and NeoForge for 1.18.2 – 1.21.1. Massmotion is released under the MIT License and targets Fabric for 1.21.11; the server requires it, and clients may optionally add it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Warfactory Ultimate Weight | Fabric, Forge and NeoForge | 1.12.2 – 1.21.1 | Client and server | 2026-07-26 |
| MT Inventory Weight | Fabric, Forge and NeoForge | 1.20 – 26.1.2 | Client and server | 2026-06-13 |
| eZWeight | Forge and NeoForge | 1.18.2 – 1.21.1 | Client and server | 2026-08-20 |
| Massmotion | Fabric | 1.21.11 | Server required, client optional | 2026-01-22 |
Questions
Does Warfactory Ultimate Weight need to be installed on the server?
Which loaders does Warfactory Ultimate Weight support?
Does Warfactory Ultimate Weight count items inside modded storage?
In the catalog
Warfactory Ultimate Weight is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
WarFactory Ultimate Weight is a multi-version Minecraft mod focused on inventory weight, movement penalties, and stamina. It is designed around performance-first inventory tracking rather than the brute-force full inventory iteration used by many older weight mods and predecessors.
Official listing
- Modrinth page
- modrinth.com/mod/warfactory-ultimate-weight
- Owner
- MisterNorwood
- Published
- 2026-06-19
- Updated on Modrinth
- 2026-07-26
- Facts verified
- 2026-10-15