Nether Portal Tools

Coordinate converter and 3D distance calculator for Minecraft Overworld ↔ Nether portal setups.

Live calculations
Portal Coordinate Converter

Converts coordinates between Overworld and Nether using the standard 8:1 X / Z scale. Outputs update as you type.

Scale 8 : 1
Overworld coords Input (block coords)
X
Y
Z
Use the F3 screen position for the center of the portal frame.
Nether coords Output (rounded)
X
Y
Z
X / Z are scaled by 8 between dimensions; Y is copied as-is.
3D Distance Calculator

Computes Euclidean distance between two positions (Overworld or Nether).

Metric
Location 1
X₁
Y₁
Z₁
Location 2
X₂
Y₂
Z₂
Distance:
Horizontal ΔXZ: · Vertical ΔY:
Build Workflow (Summary)

High-level steps for clean Overworld ↔ Nether portal linking.

  1. Build Overworld frame at the target spot without lighting it.
  2. Stand in the frame, open the F3 screen, and record X / Y / Z of the block position plus your facing direction.
  3. Feed the Overworld position into the converter to obtain the matching Nether position.
  4. Travel to the Nether and move to the output coordinates. Build a portal frame centered on that position and light it.
  5. Return to the Overworld via the new Nether portal and confirm that both directions now link correctly.
  6. Once verified, disable the original temporary portal to avoid accidental linking to the wrong location.

For multiple portals, keep Overworld frames at least ~8 blocks apart (or ~1 block in the Nether) to avoid overlapping search ranges.

Nether scale factor: Xnether = Xoverworld / 8, Znether = Zoverworld / 8.