
Weight System
A mod that introduces a weight system into Minecraft, supporting recursive backpack calculations and configurable color HUD.
⬇ Download on Modrinth

- Added weight attributes to Minecraft; items, blocks, decorations, and more now have weight, and the player's maximum carrying capacity is 100.
- When the weight percentage is less than 50%, there is no impact. When the weight percentage is greater than 50%, the movement speed becomes 0.8 times faster. When the weight percentage is greater than 80%, the movement speed becomes 0.5 times faster. When the weight percentage is greater than 100%, the movement speed becomes 0.2 times faster.
- Three types of chest armor enchantments have been added. Weight lifting can increase the player's maximum load capacity, powerless will decrease the player's maximum load capacity, and overwhelming strength will force the weight of items on the player to be 0.
- Equipped with a sophisticated backpack mod, different levels of backpacks provide varying proportions of weight reduction for the items inside.
- Press H to open HUD SETTING.
- Multiple instructions
/weight max <player> <max weight>
Modify the player's maximum carrying capacity limit
/weight reset <player>
Reset player carrying capacity limit
/weight set <itemid> <weight>
Set the item's weight to
/weight default <itemid>
Reset item weight to default
/weight resetall
Reset the weight of all items to default
/weight ratio <backpackid> <ratio>
Set the conversion ratio for the backpack
/weight get <backpackid>
Get the conversion rate of the backpack
/weight speed add <percent> <multiplier>
Add movement speed penalty rule: When the weight percentage is greater than , the player's movement speed is multiplied by
/weight speed list
Get movement speed penalty rules
/weight speed remove <percent>
Remove movement speed penalty rule
/weight speed reset
Reset movement speed penalty rules to default
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as weight-1.0.0.jar — drop this file into the mods folder
- Download size: 60 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.