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Why do my Nether portals link to the wrong place?

Portal linking rules explained — the 1:8 ratio, the 128-block search radius, and how to force exact links.

Why do my Nether portals link to the wrong place?

Portal linking feels random until you know the three rules.

Rule 1 — The 1:8 ratio

Every Nether block equals 8 Overworld blocks. A portal at Nether (10, 20) should link near Overworld (80, 160). The game converts coordinates, then searches for an existing portal.

Rule 2 — The search radius

After converting, the game searches for a portal in a 128-block radius (Overworld) / 16-block radius (Nether). If it finds any portal there, it links to that one — even if it’s not the “right” one.

Rule 3 — Closest wins

If two portals are both in range, the nearest gets the link.

  1. Build the first portal exactly at your base, note its coordinates.
  2. In the Nether, build the second portal at (X÷8, Z÷8) of the first.
  3. Light it and step through — it links to the Overworld portal nearest (X, Z). Verify, then never build other portals within 1,024 Overworld blocks of the pair.

Use our Nether Portal Calculator to convert coordinates instantly and stop guessing.