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Modrinth · Minecraft mod
Effective Armor Formula
This mod replaces Minecraft's default armor calculation with the popular "Effective Health" formula.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Effective Armor Formula release should I use?
Latest stable file 1.0-SNAPSHOT
Game version 1.20, 1.20.1, 1.20.2
Loader Fabric
Effective Armor Formula 1.0-SNAPSHOT targets 1.20, 1.20.1, 1.20.2 with Fabric. Do not install it on the client. It must be installed on the dedicated server. No extra mods listed for this file.
Where it goes
Is Effective Armor Formula required on the client, server, or both?
Do not install it on the client. It must be installed on the dedicated server.
Client Not supported
Dedicated server Required
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
This file is marked server-only.
What else does Effective Armor Formula 1.0-SNAPSHOT need?
1.0-SNAPSHOT. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Effective Armor Formula without breaking your instance.
Built for Effective Armor Formula 1.0-SNAPSHOT. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0-SNAPSHOT. It targets 1.20, 1.20.1, 1.20.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Do not install it on the client. It must be installed on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0-SNAPSHOT. It opens that exact file at the source.
About this project
What does Effective Armor Formula add?
This mod replaces Minecraft's default armor calculation with the popular "Effective Health" formula, similar to the one used in games like League of Legends. Instead of offering diminishing returns, every point of armor now consistently adds 1% to your effective HP against physical damage. This makes armor values more intuitive and easier to balance.
The mod is designed for maximum compatibility and works seamlessly with other mods that add armor penetration or shred attributes.
Project description from Modrinth.
Pick your setup
Effective Armor Formula by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.21.10
1 loader buildMinecraft version
1.21.9
1 loader buildMinecraft version
1.21.8
1 loader buildMinecraft version
1.21.7
1 loader buildMinecraft version
1.21.6
1 loader buildMinecraft version
1.21.5
1 loader buildMinecraft version
1.21.4
1 loader buildMinecraft version
1.21.3
1 loader buildMinecraft version
1.21.2
1 loader buildMinecraft version
1.21.1
1 loader buildMinecraft version
1.21
1 loader buildShowing the newest 12 of 19 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Effective Armor Formula versions and loaders
1.0-SNAPSHOT
EffectiveArmorFormula-1.0-SNAPSHOT.jar
24 Feb 2026
Client Not supported Server Required Dependencies No extras listed Listed on Release listing
Check the 1.21.11 · Fabric setup 1.201.20.11.20.21.20.3 release
Looking for an older file? The official Modrinth project page is in Resources.
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