Chat Calculator Boost
by zyx006
Chat Calculator Boost lets players run math in the game chat, with a private workspace that keeps variables and results away from other players.
What it does
The mod is a server-side Forge mod for 1.12.2 that parses mathematical expressions typed into chat. Two modes control how input is handled. In Calculator Mode, ordinary chat messages are scanned and any expression in them is evaluated automatically. In Command Mode, a single calculation is run with the calc command, and the player's chat messages are intercepted and parsed before anything is sent to other players.
Results from either mode stay private, so other players cannot see them. A result can be clicked to copy it into the chat box. Variables and other context data are cleared when a player logs out. The parsing runs on Expression-Parser, a recursive descent engine that handles scalar, vector and matrix operations, a library of mathematical functions and implicit multiplication. Because the mod is server-side only, players join without installing it and see the chat text as the server sends it.
Chat Calculator Boost is open source under the MIT License, and its source code and issue tracker are public. It is published for Forge on 1.12.2 only, with a single file dated 2026-02-03.
Key features
Automatic calculator mode
Expressions inside normal chat messages are detected and evaluated without a command.
Single calculations with calc
The calc command runs one calculation and keeps the player's chat messages intercepted and parsed.
Private results
Only the player who ran a calculation sees the result, and a result can be clicked to copy it into the chat box.
Broad operation set
Addition, subtraction, multiplication, division, modulo, power, factorial, and the sine, cosine, tangent and inverse functions are supported.
Bilingual messages
Simplified Chinese and English language files are included, and clients show the language matching their settings.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
CalcMod is an alternative with a wider reach: it is open source under the MIT License and has files for Fabric, Forge, NeoForge and Quilt covering 1.12.2 – 26.3, and either side can run it, and neither needs it. Chat-ulator is client-side only, released under the MIT License, with files for Fabric, Forge and NeoForge covering 1.19 – 26.3. Chat Calculator Boost differs from both by being Forge-only, server-side only, and limited to 1.12.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chat Calculator Boost | Forge | 1.12.2 | Server-side only | 2026-02-03 |
| CalcMod | Fabric, Forge, NeoForge and Quilt | 1.12.2 – 26.3 | Client or server, optional | 2026-09-17 |
| Chat-ulator | Fabric, Forge and NeoForge | 1.19 – 26.3 | Client-side only | 2026-09-24 |
Questions
Does Chat Calculator Boost need to be installed on the client?
Can other players see calculation results?
Which Minecraft versions are supported?
In the catalog
Chat Calculator Boost is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 2,920 mods support Minecraft 1.12.2.
More from zyx006
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What the author says
The mod includes bilingual support: - Chinese (Simplified): zh_cn.lang - English (US): en_us.lang Note: - When installed on both sides, automatically displays the corresponding language based on client language settings - With server-only installation, clients will display translation keys (e.g., calc.mode.on)…
Official listing
- Modrinth page
- modrinth.com/mod/chat-calculator-boost
- Owner
- zyx006
- Published
- 2026-02-03
- Updated on Modrinth
- 2026-02-03
- Facts verified
- 2026-10-15