Chat-ulator
by R7X2
Chat-ulator lets a player type a math expression into the game chat and see the answer appear there without leaving the game.
What it does
The mod is a client-side calculator for Minecraft chat. A player types a calculation into the chat and the result is displayed directly in the chat window, so no separate application or screen is needed. It supports the basic arithmetic operator plus, and the calculate command can be used to trigger a solve from inside the game.
Because it runs only on the client, a server does not need to install it, and players on any server can use it alone. Chat-ulator is published for Fabric, Forge and NeoForge, with files covering 14 release versions 1.19 – 26.3. The license is the MIT License, but the project is not open source.
Files for the latest builds are dated 2026-09-24: version 2.0.0 for 26.3 on Fabric, 2.0.0 for 1.20.1 on Forge and 2.0.0 for 1.20.2 on NeoForge. The first release was published on 2026-07-15.
Key features
Inline chat results
The answer to an expression is displayed directly in the chat, so the result stays where the player is typing.
Basic math operators
Expressions can use the plus operator for basic addition, with the calculator solving the problem as it is entered.
Calculate command
A calculate command lets players solve a problem from inside the game without leaving the current session.
Quick client-side use
Calculations run on the player's own client, so no server-side setup or permissions are involved.
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x4 of 4 versions with builds
1.20.x4 of 4 versions with builds
1.19.x3 of 3 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Quick sums during play
A player building or farming can add up a few numbers in chat rather than switching to an outside calculator.
Who it’s for: Players who want a simple calculator available in chat on any server or single-player world. It suits quick sums rather than advanced math.
How it compares
QoLculator is a Forge-only, client-side calculator for 1.20.1 under All rights reserved, and it is not open source. Calculator by shadowedleaves is a Fabric client-side calculator for 1.20.4 released under the MIT License, and it is open source. In Game Calculator is a Fabric mod for 1.21.6 – 26.3 that is required on the client with the server optional, and it is released under the CC0 1.0 Universal license. The calculater mod is a Fabric client-side calculator for 1.21.11 under a custom license, and it is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chat-ulator | Fabric, Forge and NeoForge | 1.19 – 26.3 | Client-side only | 2026-09-24 |
| QoLculator | Forge | 1.20.1 | Client-side only | 2025-04-14 |
| Calculator | Fabric | 1.20.4 | Client-side only | 2025-03-09 |
| In Game Calculator | Fabric | 1.21.6 – 26.3 | Client required, server optional | 2026-09-16 |
| calculator | Fabric | 1.21.11 | Client-side only | 2026-07-19 |
Questions
Which loaders does Chat-ulator support?
Does the server need Chat-ulator installed?
Which game versions have files?
In the catalog
Chat-ulator is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.
More from R7X2
Similar mods
What the author says
Chat-ulator is a simple client-side calculator for Minecraft chat. Quickly solve math problems without leaving the game by using /calculate or /c.
Official listing
- Modrinth page
- modrinth.com/mod/chat-ulator
- Owner
- R7X2
- Published
- 2026-07-15
- Updated on Modrinth
- 2026-09-24
- Facts verified
- 2026-10-15