Calculatus

Calculatus

Calculator in the chat

by
444 Downloads
fabricforgetechnologyutility
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Screenshots

Calculations

About this Mod

Calculatus: Math In Minecraft Chat

What it does

Calculatus is a Forge mod for Minecraft 1.8.9 that enabled you to evaluate mathematical expressions in chat. It supports basic arithmetic operations, parentheses, and modulo. Your player position is stored in the variables x,y,z which correspond to the player's cordinates. Short hands for larger values including "k, m, b, t" are supported (added this mainly cause of skyblock).

  • /calc <expression>: Evaluate a mathematical expression.
    • Example usage: /calc 2 + 2 * 3 evaluates to 8.
    • Example usage: /calc 1/2 evaluates to 0.5. (note: rounds to the nearest hundredths digit)
    • Example usage: /calc z+10 (where the player's position is at z = -10) evaluates to 0.
    • Example usage: /calc 1k evaluates to 1,000.
  • /calc history: View the history of expressions you have evaluated.
  • /calc clear: Clear the history of expressions you have evaluated.

Available Versions

Calculatus 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, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2fabric
June 15, 2026
mc1.8.9-1.0.4-forgerelease
MC 1.8.9forge
June 29, 2025
mc1.8.9-1.0.3-forgerelease
MC 1.8.9forge
December 8, 2024
mc1.8.9-1.0.2-forgerelease
MC 1.8.9forge
December 1, 2024
mc1.8.9-1.0.1-forgerelease
MC 1.8.9forge
November 28, 2024

How to Install Calculatus on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).

3

Install Mod

Open the mod browser in the dashboard and search for "Calculatus". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforge

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+13 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Calculatus server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is Calculatus compatible with fabric and forge?

Calculatus officially supports fabric, forge for Minecraft 26.1.2, 26.1.1, 26.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Calculatus – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Calculatus consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Calculatus with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v2.1 only
Server-side
Unsupported

Supported Versions

26.1.226.1.126.11.21.111.21.101.21.91.21.81.21.71.21.61.21.5+6 more