simMC 奥术卷轴计算器
simMC Arcane Scrolls Calculator works out the materials needed to craft a set of arcane scrolls, with a calculator opened inside a world.
What it does
Players select a target number of scrolls and the calculator totals the materials each recipe requires. Materials can be excluded, and where several alternative recipes exist the totals are shown for each one, so a player can compare them.
The solver runs in the background, and a stale calculation is cancelled and replaced when inputs change, so the game interface is not blocked while numbers update. Rotation guidance covers the material decay that begins after about 64 back-to-back crafts of one recipe, so players know when to switch. The calculator is opened with the O key once a world is entered; the key can be changed in the Controls menu, and a fallback client command is available.
Written by MurphyPotato, simMC Arcane Scroll Calculator is an unofficial Fabric mod for the client side of Minecraft 1.21.8, released as open source under the MIT License. Fabric API is a required dependency, and the mod needs Java 21 and Fabric Loader 0.17.3 or newer. The 2.0.0-fabric file for 1.21.8 was published on 2026-08-05.
Key features
Material totals per recipe
The calculator lists the materials each scroll recipe needs for the chosen quantity of scrolls.
Exclusions and alternatives
Materials a player does not want to use can be excluded, and multiple alternative recipes are shown side by side.
Off-target impurity checks
Requirements are checked against impurities across eight elements, from gold and wood to light and dark.
Background solver
Calculations run off the main thread, and outdated results are replaced without freezing the interface.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
BCShop is a Fabric client mod for 1.21.8 under All rights reserved, so it is not open source. Mace calculator is a Fabric client mod for 1.21 – 1.21.11 released under the MIT License, and it is not open source. simMC Arcane Scroll Calculator is open source under the MIT License and is also client-side only, covering 1.21.8 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| simMC 奥术卷轴计算器 | Fabric | 1.21.8 | Client-side only | 2026-08-05 |
| BCShop | Fabric | 1.21.8 | Client-side only | 2026-01-02 |
| Mace calculator | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-04-05 |
Questions
Does the server need to install this mod?
Which game version does the mod support?
In the catalog
simMC 奥术卷轴计算器 is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 17,695 mods support Minecraft 1.21.8.
More from yang_yu_potatoes
Similar mods
What the author says
simMC Arcane Scroll Calculator is an unofficial client-side Fabric mod for Minecraft 1.21.8, created by MurphyPotato for simMC players. It is not affiliated with or endorsed by simMC, Mojang Studios, or Microsoft. This mod runs only on the client. It does not require server installation, register custom network…
Official listing
- Modrinth page
- modrinth.com/mod/simmc-arcane-scroll-calculator
- Owner
- yang_yu_potatoes
- Published
- 2026-08-04
- Updated on Modrinth
- 2026-08-05
- Facts verified
- 2026-10-15