In Game Calculator
In Game Calculator adds a command that solves math expressions directly in the game chat, without an external tool.
What it does
The calculator command handles basic operations (addition, subtraction, multiplication and division), parentheses and conversions, and it is meant for quick checks while building, crafting or working on redstone circuits. Input values are limited to a default range of 0 to 1000, and errors such as divide-by-zero or invalid input are reported instead of crashing. Only the client needs the mod, so a server can run without it, and players install it on their own game. The mod is released under the CC0 1.0 Universal dedication, which is not an open source license, and files cover 1.21.6 – 26.3 for Fabric, with 1.2.0 for 26.3 as the latest file.
Key features
Basic arithmetic
Addition, subtraction, multiplication and division can be typed as a single expression in the command.
Parentheses and order
Parentheses are supported, so nested expressions such as 2+3 times 4 evaluate in the expected order.
Error handling
Divide-by-zero and invalid inputs are caught and reported, and input values default to a range of 0 to 1000.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x6 of 6 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Chat-ulator is available for Fabric, Forge and NeoForge across 1.19 – 26.3, is client-side only, and is licensed under the MIT License without being open source. Portal Calculator works on Fabric for 1.20.1 – 26.3 with client and server installs, and is open source under the CC0 1.0 Universal license that this mod also uses.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| In Game Calculator | Fabric | 1.21.6 – 26.3 | Client required, server optional | 2026-09-16 |
| Chat-ulator | Fabric, Forge and NeoForge | 1.19 – 26.3 | Client-side only | 2026-09-24 |
| Portal Calculator | Fabric | 1.20.1 – 26.3 | Client and server | 2026-09-19 |
Questions
Does the server need In Game Calculator?
In the catalog
In Game Calculator is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 8,071 mods support Minecraft 26.3.
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What the author says
This mod adds a /calculator command to Minecraft that lets you quickly solve math problems in-game without using an external calculator. Perfect for redstone builds, crafting math, and coordinate conversions. Basic math: + (add), - (subtract), * (multiply), / (divide)
Official listing
- Modrinth page
- modrinth.com/mod/in-game-calculator
- Owner
- hindustani_gamer_fardin
- Published
- 2025-08-22
- Updated on Modrinth
- 2026-09-16
- Facts verified
- 2026-10-15