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Rust Rust Updated Dec 8, 2025

How to Increase Maximum Item Stack Size on Your Rust Server

Learn how to increase item stack sizes on your Rust server using the Stack Size Controller plugin.

Increasing stack sizes allows players to carry more items in a single inventory slot, reducing inventory management and making gameplay smoother. Using the Stack Size Controller plugin, you can customise stack sizes for different item categories.

This guide requires uMod to be installed on your server. See How to Install uMod (Oxide) on Your Rust Server for instructions.

Installing the Stack Size Controller Plugin

  1. Download the Stack Size Controller plugin from uMod.
  2. Upload the plugin file to your oxide/plugins folder. See How to Install uMod Plugins on Your Rust Server for detailed instructions.
  3. Start your server to generate the config file.

Configuring Stack Sizes

  1. Navigate to the Wabbanode Control Panel and select your Rust server.
  2. Click the Files tab. Control Panel Files
  3. Navigate to the oxide/config folder. Opening the oxide config folder
  4. Click on StackSizeController.json to open it. Opening the StackSizeController config file
  5. Edit the settings as needed (see below).
  6. Click Save then reload the plugin:
oxide.reload StackSizeController

Understanding the Config Options

The Stack Size Controller plugin uses multipliers to increase stack sizes from their default values.

Multiplier Values

ValueEffect
1Default stack size
2Double the default stack size
55x the default stack size
1010x the default stack size

Category Settings

SettingDescription
AmmunitionStack size for ammo (bullets, arrows, etc.)
ConstructionStack size for building materials
ItemsStack size for general items
MedicalStack size for medical items (syringes, bandages, etc.)
WeaponStack size for weapons
ToolStack size for tools
TrapsStack size for traps
ResourcesStack size for resources (wood, stone, metal, etc.)
AttireStack size for clothing
ComponentStack size for components
FoodStack size for food items

Example Configurations

Double all stack sizes:

{
  "CategoryStackMultipliers": {
    "Ammunition": 2,
    "Construction": 2,
    "Items": 2,
    "Medical": 2,
    "Resources": 2,
    "Food": 2
  }
}

10x resources, 5x everything else:

{
  "CategoryStackMultipliers": {
    "Ammunition": 5,
    "Construction": 5,
    "Items": 5,
    "Medical": 5,
    "Resources": 10,
    "Food": 5
  }
}

Some items like weapons and tools have a default stack size of 1 and cannot be stacked regardless of multiplier settings.

Stack sizes are now configured on your server. Players will be able to carry more items per stack.

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