JMCC Value Converter
by DominosMersi
JMCC Value Converter converts values items between JustMC and JMCC formats, working on the item held in the hand or the one under the cursor while the inventory is open.
What it does
Players who use both JustMC and JMCC value items can carry a stack into the other system without hand-editing it. The conversion runs from the inventory screen: with the inventory closed the item in the player's hand is converted, and with the inventory open the item under the cursor is converted instead.
The mod is a Fabric client mod, so only the player who installs it needs it; servers run without it. It is released under the MIT License and is open source, with the source code and issue tracker publicly available. Fabric API and Fabric Language Kotlin are both required, and Mod Menu is optional. Files target 1.21.11 only, with version 1.2.1 as the latest Fabric file, first published on 2026-03-14 and last updated on 2026-05-17.
Key features
JustMC to JMCC conversion
Converts value items from the JustMC format into the JMCC format, so the result can be used on the JMCC side.
Hand conversion
With the inventory closed, the item in the player's hand is converted in place.
Cursor conversion
With the inventory open, the item under the cursor is converted, which allows converting items stored in containers.
Kotlin-based build
Written in Kotlin and loaded through Fabric Language Kotlin, with Fabric API supplying the hooks it uses.
Gallery
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 2
Optional 1
Use cases
Moving value items between systems
A player who keeps items in both formats can convert a single stack when it has to pass from one system to the other.
Converting a container's contents
With the inventory open, each item the cursor passes over can be converted one at a time, without moving it out of the container first.
Who it’s for: Players who work with JustMC and JMCC value items on the client and want to convert them without manual editing.
How it compares
JMC Textovik is a Fabric client mod for 1.21 – 1.21.8 under All rights reserved, so it is not open source and does not cover 1.21.11. JustUtils is a Fabric client mod for 1.20.2 – 1.21.11 under the MIT License, but it is not open source. JMC-Codespace is a Fabric client mod for 1.20.4 – 26.2 under the MIT License and is open source, but it targets a wider range of versions and does not convert the same items as this mod.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| JMCC Value Converter | Fabric | 1.21.11 | Client-side only | 2026-05-17 |
| JMC Textovik | Fabric | 1.21 – 1.21.8 | Client-side only | 2025-07-27 |
| JustUtils | Fabric | 1.20.2 – 1.21.11 | Client-side only | 2026-01-06 |
| JMC-Codespace | Fabric | 1.20.4 – 26.2 | Client-side only | 2026-09-21 |
Questions
Does JMCC Value Converter need Fabric API?
Does the server need JMCC Value Converter?
Which game version does JMCC Value Converter support?
Is JMCC Value Converter open source?
In the catalog
JMCC Value Converter is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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Official listing
- Modrinth page
- modrinth.com/mod/jmccvalueconverter
- Owner
- DominosMersi
- Published
- 2026-03-14
- Updated on Modrinth
- 2026-05-17
- Facts verified
- 2026-10-15