Calculator

This project adds a command that allows you to complete math calculations inside your game.

1.4K Downloads

fabricoptimizationtechnologyutility

Configure a Compatible Minecraft Server

About this Mod

Calculator Command (/calc)

Description:
The Calculator Command mod adds a convenient /calc command to Minecraft, letting players perform mathematical calculations directly in-game. It’s ideal for builders, redstone engineers, or admins who need quick math without leaving Minecraft.

Features

Command: /calc <expression> — instantly calculates your math input.
Supports +, -, *, /, and parentheses.
Returns results in color-coded chat messages.
Works in both singleplayer and multiplayer (permission-based).
Lightweight and compatible with most modpacks.

Examples

/calc (25+10)*4 → Result: 140
/calc 34.5*2 → Result: 69
/calc 5+5+5-5 → Result: 10

Available Versions

Calculator 1.0.0 1.21.xrelease

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric

October 10, 2025

How to Install Calculator on Your Client

Install the Mod Loader Locally

Install fabric for your local Minecraft version.

Download the Matching File

Choose the Calculator file for fabric and Minecraft 1.21.10.

Install Mod

Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+8 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Does Calculator need to be installed on the Minecraft server?

No. Modrinth marks Calculator as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.

Which version and loader does Calculator require?

Use a file for fabric and your exact Minecraft version. Supported versions include 1.21.10, 1.21.9, 1.21.8. Files for different loaders are not interchangeable.

Calculator is not working – what should I check?

First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.