Calculator
by dreamiiing
Calculator is a Fabric command that lets players evaluate math expressions in chat without leaving the game.
What it does
The calc command takes a math input typed in game and returns the result at once. It supports the four basic operators and parentheses, so longer expressions work as written. Results appear as color-coded chat messages, which makes them simple to read at a glance.
The command works in single-player worlds and on multiplayer servers, and access can be limited by permission, so a server owner decides who may use it. Builders, redstone engineers and server administrators can check values during a build or a setup without switching to an outside tool. The mod is lightweight and is described as compatible with most modpacks.
Installation needs Fabric API. Calculator runs on the client only, so players install it and servers do not need it. Files are published for Fabric across 13 release versions, 1.21 – 26.3, under the CC0 1.0 Universal license, which places the work in the public domain; it is not open source.
Key features
Calc command
A calc command evaluates a typed expression and reports the answer in the chat window.
Operators and parentheses
Addition, subtraction, multiplication and division are supported, and parentheses group parts of an expression.
Color-coded results
Answers are printed as colored chat messages, separating results from other chat text.
Permission control
Use of the command can be restricted by permission, which lets server owners choose who may calculate.
Compatibility
Latest build for each game version and loader.
26.x2 of 2 versions with builds
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Redstone and build planning
A player checks coordinates, distances or component counts in chat while working on a redstone circuit or a structure.
Server administration
An admin runs quick sums during server tasks without opening a separate calculator on another device.
Who it’s for: Builders, redstone engineers and server administrators who need quick math while playing. Players in single-player worlds can use the command as well.
How it compares
Calculatus is a Fabric and Forge mod that is client-side only, licensed under the GNU Lesser General Public License v2.1 only, and open source, with files for 1.8.9 – 26.2. CalcBar is published for Fabric and NeoForge for 1.21.11 only, under All rights reserved, and is not open source. Disable Lighting is a Fabric mod for 1.21 – 26.3 under the CC0 1.0 Universal license, the same license as Calculator, but it does not evaluate expressions.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Calculator | Fabric | 1.21 – 26.3 | Client-side only | 2026-10-11 |
| Calculatus | Fabric and Forge | 1.8.9 – 26.2 | Client-side only | 2026-06-25 |
| CalcBar | Fabric and NeoForge | 1.21.11 | Not published | 2026-03-07 |
| Disable Lighting | Fabric | 1.21 – 26.3 | Client-side only | 2026-09-29 |
Questions
Does Calculator need Fabric API?
Does a server need Calculator installed?
Which game versions does Calculator support?
In the catalog
Calculator is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.
More from dreamiiing
Similar mods
What the author says
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.
Official listing
- Modrinth page
- modrinth.com/mod/calc
- Owner
- dreamiiing
- Published
- 2025-10-10
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15