MathMod
With MathMod installed, players can type math expressions straight into the chat bar and read the result without leaving the game.
What it does
MathMod adds several math commands to the chat. A command takes a basic arithmetic expression, evaluates it and prints the answer back in chat. Expression evaluation handles the usual operators, and the constant pi is supported inside expressions, so a calculation like a circle's circumference can be typed directly. Some operations are possible with the mod, though it is kept to a simple set of calculations rather than a full computer algebra system.
The mod is a client-side only Fabric mod, so only the player's client needs it; a server can run without it. Files are published for Fabric and target 1.21.4 alone. MathMod is released under the MIT License and is open source, with public source code and an issue tracker. The latest Fabric file is mc1.21.4-0.1.1 for 1.21.4, dated 2025-04-21 and published on the beta channel, and the first release dates from 2025-04-19.
Key features
Chat math commands
Several commands in the chat evaluate an arithmetic expression and show the result without any other tool.
Expression evaluation
Basic math expressions are parsed and computed from the command line, including the constant pi.
Player coordinate suggestions
Typing a command offers player coordinates as auto suggestions, which saves retyping positions into calculations.
Adjustable decimal precision
The number of decimal places in results can be changed through the editable configuration file.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Chat Math is client-side only and open source under the MIT License, with files for 1.21.11. MathChat is server-side only and not open source, released under the Apache License 2.0 for 1.21.4, so it is the one that runs on the server. Mineculator covers 1.20.1 – 1.21.10, is not open source, and is published under All rights reserved with an environment that allows either side. Chat Calcus is open source under the MIT License and client-side only, with files for 1.20.4 – 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MathMod | Fabric | 1.21.4 | Client-side only | 2025-04-21 |
| Chat Math | Fabric | 1.21.11 | Client-side only | 2026-01-29 |
| MathChat | Fabric | 1.21.4 | Server-side only | 2025-11-06 |
| Mineculator | Fabric | 1.20.1 – 1.21.10 | Client or server, optional | 2025-10-22 |
| Chat Calcus | Fabric | 1.20.4 – 1.21.1 | Client-side only | 2024-10-24 |
Questions
Does MathMod need to be installed on the server?
Which Minecraft version does MathMod support?
Can MathMod use the value of pi in a calculation?
In the catalog
MathMod is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
A simple mod that allows you to evaluate basic math expressions in the command line. These are some operations possible with the mod.
Official listing
- Modrinth page
- modrinth.com/mod/mathmod
- Owner
- visarmullaj07
- Published
- 2025-04-19
- Updated on Modrinth
- 2025-04-21
- Facts verified
- 2026-10-15