
Heavy Inventories
Add some weight to those items
About this Mod

Heavy Inventories is a mod that aims to give a more realistic feel to Minecraft by adding a configurable weight to the items and blocks in the game, in an immersive, Minecraft-like way.
Features
- An immersive and realistic experience for more hardcore players.
- Configurable item and block weights.
- Customizable in-game GUI.
Heavy Inventories does not generated weight files any longer. It uses crafting recipes to decide the starting weight of each item. If the item does not have a crafting recipe, it defaults to 0.1 Floating-Point.
This however can be changed in a .json file should you choose to. Example for ./weights/minecraft.json:
{
"cobblestone": {
"weight": 10.0
},
"dirt": {
"weight": 5.0
}
}
This can also be done via in-game commands. While holding the item you want to change the weight of, run command /heavyinventories set weight <number>
We have removed the old "pumping iron" feature, which allowed increasing the players strength through using an anvil.
Using strength potions now increase the players max carry weight to up to 120% of their base carry weight.
We have also introduced the enchantment Bracing which applies to chestplates that will increase the players carry weight to up to 100% (double).
We are implementing an enchantment for leggings which will allow for adding up to 50% extra carry weight.
Currently this mod is in development for NeoForge, but there are plans to include a Forge and Fabric release in the works.
Version 4.0.0 for NeoForge 1.21.1 is currently in development. We will need help translating this mod to your language! Please help if you can!
Available Versions
How to Install Heavy Inventories on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Heavy Inventories". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Heavy Inventories server crashes on startup – what to do?
Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Heavy Inventories compatible with neoforge?
Heavy Inventories officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Heavy Inventories – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Heavy Inventories consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install Heavy Inventories with just one click on your server.