ModsJava
Redstone Arithmetics Mod (26.2, 1.21.11) – Calculate Redstone Timers
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
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Redstone Arithmetics Mod brings a handy calculator command right into your chat box. You can solve math problems without leaving the world or opening another program. It helps you calculate portal coordinates, measure block distances, and find the exact items needed for hopper clocks in seconds.
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Features:
- Solves basic math equations with addition, subtraction, multiplication, and division.
- Supports parentheses in math formulas to handle order of operations cleanly.
- Converts coordinates between the Overworld and the Nether for easy portal linking.
- Calculates exact item counts required for redstone hopper timers.
- Finds distances between two 3D coordinates, as well as area and volume measurements.
- Converts time values between real-world seconds and Minecraft game ticks.
- Includes a random number generator that works with custom ranges.
- Prevents game crashes by catching divide-by-zero errors and invalid inputs.
Commands:
/calculator <expression>: Solves standard math equations./calculator craft <item> amount <type>: Calculates item counts in stacks or shulker boxes./calculator nether ~ ~ ~: Converts your current position to Nether coordinates./calculator overworld: Converts Nether positions to Overworld coordinates./calculator hoppertimer <seconds>: Calculates the number of items needed for a hopper clock in seconds./calculator hoppertimerticks <ticks>: Calculates items needed for a hopper clock based on game ticks./calculator distance <x1> <y1> <z1> <x2> <y2> <z2>: Measures the distance between two coordinate points./calculator area <length> <width>: Calculates the area of a flat space./calculator volume <length> <width> <height>: Calculates the total volume of a 3D box./calculator sq <number>: Squares the selected number./calculator cube <number>: Cubes the selected number./calculator power <base> <exponent>: Raises a base number to a specific power./calculator sqrt <number>: Calculates the square root of a number./calculator secToTicks <seconds>: Converts seconds into game ticks./calculator tickToSec <ticks>: Converts game ticks into real-world seconds./calculator random <max>: Generates a random number between zero and the chosen maximum value./calculator help: Shows in-game help and extra calculator options.
How to Use:
- Open your chat box in-game by pressing T or /.
- Type
/calculatorfollowed by your math equation or command parameters. - Press Enter to run the calculation and read the result in your chat log.
Screenshots:



Redstone Arithmetics Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 516982.mcaddon
- Download size: 36 KB
- Download link checked 28 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.