ModsFinder

Calculator - Item Calculator

by Mightyyy

With Calculator - Item Calculator installed, a full calculator opens inside the Minecraft inventory, so players can run arithmetic without leaving the game.

FabricClient-side onlyMIT License1.20.1 – 1.21.11

What it does

The Calculator - Item Calculator mod by Mightyyy places a working calculator in the inventory screen. It is a client-side only mod, so players install it on their own game and servers do not need it. Fabric API is required, and the mod is published for Fabric only, across 17 release versions covering 1.20.1 – 1.21.11. It is released under the MIT License and is not open source.

Key features

  1. Inventory calculator

    A full calculator is available directly in the inventory screen, with no separate window or external tool needed.

  2. Arithmetic in game

    Players enter and compute expressions inside the inventory while keeping their items and position in view.

  3. Issue tracker

    A public issue tracker is linked for reporting bugs and following the mod's development.

Compatibility

Latest build for each game version and loader.

1.21.x11 of 11 versions with builds
1.21.111.0.0
1.21.101.0.0
1.21.91.0.0
1.21.81.0.0
1.21.71.0.0
1.21.61.0.0
1.21.51.0.0
1.21.41.0.0
1.21.31.0.0
1.21.21.0.0
1.21.11.0.0
1.20.x6 of 6 versions with builds
1.20.60.1.0
1.20.50.1.0
1.20.40.1.0
1.20.30.1.0
1.20.20.1.0
1.20.10.1.0
ReleaseBetaAlphaNot available

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

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Simple In-Game Calculator is also a Fabric, client-side only mod, released under the Apache License 2.0 and built for 1.21.4 only. MI-84 Calculator is a Fabric mod for 1.21.1 with a custom license and is not open source.

ModLoadersGame versionsEnvironmentUpdated
Calculator - Item CalculatorFabric1.20.1 – 1.21.11Client-side only2026-10-04
Simple In-Game CalculatorFabric1.21.4Client-side only2026-05-07
MI-84 CalculatorFabric1.21.1Client-side only2026-08-05

Questions

Does Calculator - Item Calculator need Fabric API?

Yes. Fabric API is a required dependency and must be installed alongside the mod on the Fabric loader.

Does the server need the mod?

No. Only the player's game needs it, and servers run without it.

In the catalog

Calculator - Item Calculator is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Game mechanics mods29,952Fabric modsMods for 1.21.1119,862

More from Mightyyy

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What the author says

Item Calculator adds a full calculator directly to the Minecraft inventory. Open your inventory and click the centered > tab on its right edge. A Minecraft-styled calculator smoothly slides out while your inventory remains visible and usable. # Features Full on-screen number and operator keypad Addition, subtraction…
Mightyyy, on the Modrinth page

Official listing

Owner
Mightyyy
Published
2026-06-12
Updated on Modrinth
2026-10-04
Facts verified
2026-10-15

Tags

Game mechanicsUtility
Open on ModrinthCompare