ModsFinder

Stack Calculator

by fu_gui

Stack Calculator is a Forge utility for working out item stack sizes, opened from a key press in the game.

ForgeClient or server, optionalMIT LicenseOpen source1.20.1

What it does

Stack Calculator helps players work out how many items fit in a stack quickly. Pressing the C key in-game opens its calculator screen, and the same calculation is available through a command named stackcalc that takes a stack size as its argument. Ctrl+C, Shift+C and Alt+C key combinations are supported, and the default stack size can be set in the configuration file.

The mod is listed under Utility, with Optimization as a secondary category. Files exist for Forge only, for Minecraft 1.20.1, and the 1.0.0 file dated 2026-04-20 is the only release. It works on either side, and neither needs it. The code is released under the MIT License and is open source; public links exist for the source code and the issue tracker.

Key features

  1. Calculator screen

    A GUI opens from the C key and performs stack size calculations without leaving the game.

  2. Stackcalc command

    A command named stackcalc calculates stack sizes from a value typed into chat.

  3. Key combinations

    Ctrl+C, Shift+C and Alt+C are supported as shortcuts for the calculation.

  4. Configurable default

    The default stack size can be changed in the configuration file.

  5. Chinese and English

    The interface is available in English and Chinese.

Compatibility

Latest build for each game version and loader.

1.20.11.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Just Calculator UI is a Forge mod for 1.20.1 – 1.20.6 that runs on the client alone, and it is not open source. REI Search Bar Calculations Forge Port is a client-side Forge option for 1.20.1 under the GNU Lesser General Public License v3.0 only, and it is open source. Advanced Inventory is a client and server mod for 1.20.1 – 1.20.4 under the MIT License, and it is not open source.

ModLoadersGame versionsEnvironmentUpdated
Stack CalculatorForge1.20.1Client or server, optional2026-04-20
Just Calculator UIForge1.20.1 – 1.20.6Client-side only2026-04-12
REI Search Bar Calculations Forge PortForge1.20.1Client-side only2025-11-02
Advanced InventoryForge1.20.1 – 1.20.4Client and server2024-02-11

Questions

Does Stack Calculator need to be installed on the server?

No. Installing it on one side is enough: it works on a client alone, a server alone or both, so the server does not have to run it.

Which Minecraft version does Stack Calculator support?

Only Minecraft 1.20.1 is listed, and the Forge file for it is version 1.0.0, published 2026-04-20.

How is the stack size default changed?

The default stack size is set in the configuration file, and the calculator uses that value when no other is given.

In the catalog

Stack Calculator is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 34,764 mods support Minecraft 1.20.1.

Utility mods36,990Forge modsMods for 1.20.134,764

Similar mods

Jade 🔍1.16.4 – 26.3FancyMenu1.12 – 26.3Controlling1.7.10 – 26.3Euphoria Patches1.7.10 – 26.3Cubes Without Borders1.16.5 – 26.2Litematica1.12 – 26.3

Official listing

Owner
fu_gui
Published
2026-04-20
Updated on Modrinth
2026-04-20
Facts verified
2026-10-15

Tags

UtilityOptimization
Open on ModrinthCompare