Fabric · Minecraft 1.21.1 – 1.21.11

Bedrock Calculator

Calculate your overworld coordinates straight from the bedrock formation at the bottom of the world. Enter the pattern, run the solver, get your X / Z.

⬇ Download See how it works

Enter your bedrock location

Reset

Confirm

Reading bedrock pattern...

How it works

The bottom bedrock layer generates as a deterministic pattern. The solver turns that pattern into a position.

Fingerprint

Hashes the bedrock / air layout you enter into a 64-bit value.

Seed recovery

Walks the world LCG backwards to the originating seed state.

Noise sampling

Samples fractal noise, entropy, and the pattern's geometry.

Projection

Folds everything into an X / Z bounded to the world border.

In-game

A clean 6×7 grid. Click deepslate to mark bedrock, hit confirm, get your coordinates.

Compatibility

Minecraft1.21.1 – 1.21.11

LoaderFabric

RequiresFabric API

Java21+

SideClient only

Install

Install Fabric Loader for your Minecraft version (1.21.1–1.21.11).
Download Fabric API and the Bedrock Calculator jar.
Drop both jars into your .minecraft/mods folder.
Launch the game and run /bedrock in a world.