Minecraft Nether Portal Calculator
In Minecraft, 1 block in the Nether equals 8 blocks in the Overworld. To make two portals link reliably, the Nether portal should sit at your Overworld X and Z divided by 8 (Y stays the same). Enter coordinates on either side below and the matching coordinates appear instantly.
What the Minecraft Nether Portal Calculator does
This Minecraft portal calculator converts coordinates between the Overworld and the Nether so your portals link up exactly. Because 1 block in the Nether equals 8 blocks in the Overworld, lining portals up by eye almost never works — this Minecraft nether portal calculator does the maths for you instantly.
The formula
To go the other way, multiply by 8. Only X and Z scale; the Y (height) coordinate is identical in both dimensions.
How to use it
Enter your Overworld X and Z to get the Nether coordinates where you should build the matching portal, or enter Nether coordinates to find the Overworld spot. The Minecraft portal calculator updates as you type — no button needed.
Worked example
An Overworld portal at X 2400, Z -1024 should have its Nether portal at X 300, Z -128. Build there and the two will link reliably instead of spawning a new portal somewhere random.
Tips for linking portals
- Use exact scaled coordinates — being a few blocks off can make the game create a brand-new portal.
- The Nether ceiling is at Y 128, so very high Overworld portals may need adjusting.
- Light the destination portal first so the link is forced to your chosen spot.
Frequently asked questions
How do I link two Nether portals?
Build your Overworld portal, divide its X and Z by 8 to get the target Nether coordinates, then build a portal there. Keep the two within range and they will link.
Does the Y coordinate change between dimensions?
No. Only X and Z scale by 8 between the Overworld and the Nether. Y (height) is the same in both, though Nether ceiling is at Y 128.
Why do my portals link to the wrong place?
Portals search for an existing portal within a small range of the scaled coordinate. If one is slightly off, the game may create a new portal. Use exact scaled coordinates to avoid this.