Calculators

Nether Portal Calculator

Perfectly linked portals every time. Enter your coordinates, pick a direction and build the linked portal at the matching coordinates.

Convert

Build portal at
13, 64, -25

How portal linking works

  • • Every 1 block in the Nether = 8 blocks in the Overworld on X and Z. Y stays the same.
  • • The game searches a 128-block cube around your converted coordinates for an existing portal before creating a new one.
  • • To force a 1:1 link, build BOTH portals manually at the calculated coordinates — don't let the game spawn one for you.
  • • Light the Overworld portal first, walk through, then light the Nether portal exactly at the converted coordinates.
  • • Bedrock follows the same 8:1 ratio, but the Nether ceiling (y=128) caps how high you can build.
Example

Overworld base at 800, 70, -400 → build Nether portal at 100, 70, -50.