Numismatics Calculator

Numismatics Calculator

A client-side utility mod that adds a calculation menu for coin items from the mod "Create: Numismatics"

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1.8K Downloads
fabricforgeneoforgequiltutility
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Screenshots

Currency to Coins Conversion
Selection's Total Value
Total Slot Value
Settings Screen
Keybindings

About this Mod

Numismatics Calculator

What This Does

This is a client-side forge mod that adds some calculator functionality to coin items from the mod "Create: Numismatics" by IThundxr.

This is useful because those coins have values like 1, 8, 16, 64, 512 and those are VERY hard to calculate for random sums like "75" if you have those coins as the main economy on an SMP and you trade everything for those.

With the calculator you won't need to struggle with your system calculator, since this one is built into your game and has a lot of functionality specifically for this purpose.

Usage And Functionality

Video Showcase:

Total Slot Value

Total Slot Value

By holding down SHIFT (can be configured) you can see the total value of every single slot with a coin.

Remember, that you can check if you have the right sum available to pay someone with the Selection feature from the Summation Tab in the Main Overlay.

Control Panel

When opening your inventory, you'll see the mod's Control Panel.

Control Panel

It lets you toggle the visibility of the Main Overlay and open mod's settings

You can even disable the Control Panel, because both actions are available as keybindings too:

Keybindings

With those you can always toggle the Main Overlay with a key right from your inventory, even without the Control Panel visible.

Additionally you can open the mod's Config Screen with a key too.

The Main Overlay contains two tabs visible on the top:

Summation Tab

Summation Tab

In the first tab you have a text displaying your total coins in the inventory, and coins in the selected area.

You can toggle selection mode with the "Select button".

It even works in CHESTS and all other containers:

Chest Sum

Conversion Tab

Conversion Tab

In the second tab you can enter an amount of ¤ to actual coins. By default, it'll tell you a general coin composition as if you had infinite coins.

Since the original mod has a coin type for 1 ¤, there is never expected any sum in return.

And there is a second mode accessible with the Only available checkbox:

Only available Mode

This mode will only work with coins in your inventory and tell you if you don't have enough.

"Only Available" mode will take into account the cases when you have to OVERPAY or you DON'T HAVE ENOUGH:

Overpaying

Missing

Mod's Config Screen

Mod Config Screen

By pressing the second button in your Control Panel or just by pressing a configured keybind, you can open the mod's Config Screen. Here you can toggle features on and off.

Notes

Current known bugs:

  • None! :D

Supported Versions

  • 1.20.1: Forge, Fabric (+Quilt)
  • 1.21.1: NeoForge

Notes:

Currently only Fabric 1.20.1 has patch version 1.2.1 with some fixes, becuase only fabric had the core issue

Building From Source Code

Check the Github repository for these instructions :D

Available Versions

Numismatics Calculator 1.2.1 - KeyBindings Patchrelease
MC 1.20.1fabric, quilt
January 17, 2026
Numismatics Calculator 1.2.0release
MC 1.21.1neoforge
September 28, 2025
Numismatics Calculator 1.2.0release
MC 1.20.1fabric, quilt
September 27, 2025
Numismatics Calculator 1.2.0release
MC 1.20.1forge
September 27, 2025
Numismatics Calculator 1.0.0release
MC 1.20.1forge
September 14, 2025

How to Install Numismatics Calculator on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Numismatics Calculator". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforgequilt

Minecraft Versions

1.21.1, 1.20.1

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Numismatics Calculator server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Numismatics Calculator compatible with fabric and forge and neoforge and quilt?

Numismatics Calculator officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Numismatics Calculator – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Numismatics Calculator consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Numismatics Calculator with just one click on your server.

Recommended RAM
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Min. 3 GB | +1 GB pro 8 Spieler
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NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Unsupported

Supported Versions

1.21.11.20.1