How Nether portal coordinates work
The Nether is scaled so 1 block in the Nether = 8 blocks in the Overworld on the X and Z axes. Y (height) is not divided. Minecraft uses this when deciding where a portal should connect:
| Direction | Formula | Example |
|---|---|---|
| Overworld → Nether | X÷8, Z÷8 (floor), Y same | (800, 64, 400) → (100, 64, 50) |
| Nether → Overworld | X×8, Z×8, Y same | (100, 64, 50) → (800, 64, 400) |
How to link portals (step by step)
- Build (or stand at) your Overworld portal and note X, Y, Z (F3 on Java).
- Enter those coords above — copy the Nether X/Y/Z result.
- Enter the Nether and go to those exact coordinates.
- Build and light a portal there. Break any auto-spawned portal that would steal the link.
- Test both directions. If you exit at the wrong portal, something closer is in range.
Portal search radius (why links “steal”)
- Java: searches ~128 blocks in the Nether, ~1024 blocks in the Overworld.
- Bedrock: typically ~128 blocks in both directions.
- Closest portal in 3D distance wins — including large Y differences.
Nether highway tip
For long trips, dig a tunnel (often on the Nether roof around Y 120+) between converted coords. Ice-boat paths make the already 8× shorter route even faster. Use the distance calculator with two Overworld bases to see how many Nether blocks that highway needs.
Frequently asked questions
How do you calculate Nether portal coordinates?
Divide Overworld X and Z by 8 (floor) to get Nether X and Z. Multiply Nether X and Z by 8 to get Overworld. Y is not scaled. Example: Overworld (800, 64, 400) → Nether (100, 64, 50).
Why won’t my portals link?
Minecraft links to the closest portal in range. On Java, the search is 128 blocks in the Nether and 1024 in the Overworld. Build the far-side portal at the exact converted coordinates and remove accidental auto-generated portals nearby.
Does Y matter for portal linking?
Y is not multiplied by 8, but distance checks are 3D — huge height gaps can make a farther portal “closer.” Keep linked portals at similar Y when possible.
Is the 8:1 ratio the same on Bedrock?
Yes, the coordinate ratio is the same. Search radii differ: Bedrock uses a 128-block search in both directions, while Java uses 128 (Nether) and 1024 (Overworld).
How much faster is Nether travel?
One block in the Nether equals eight Overworld blocks, so a straight Nether path is about 87.5% shorter than walking the same Overworld route.