Nether Portal Coordinate Calculator
Enter your coordinates and the calculator works out the matching point in the other dimension, plus the square the game will search for an existing portal.
How we calculate
Horizontally the worlds are compressed eight times over: one block in the Nether covers eight Overworld blocks along X and Z. Going down from the Overworld therefore means dividing X and Z by eight and rounding down, and coming back means multiplying by eight.
The Y height is not scaled at all: the game carries it across unchanged and only then looks for a workable spot vertically. That is why the calculator leaves Y alone and warns separately when the value you entered falls outside the dimension — there is nowhere to place a portal above the Nether ceiling.
The destination is not a promise: before building a new portal the game inspects a square around the calculated point and links to any working portal it finds there. The radius of that search depends on the edition, so it is shown on its own line.
Sources
checked 18 August 2026
Questions and answers
What is the coordinate ratio between the worlds?
One block in the Nether equals eight Overworld blocks along X and Z. The Y height is not scaled — it carries over unchanged.
Why does my portal come out in the wrong place?
The game looks for an existing portal near the expected point and links to that one instead. A nearby portal will hijack the connection.
How do I link two portals reliably?
Work out the Nether coordinates for each Overworld point and build portals exactly there. The further apart they are in the Nether, the lower the chance of a hijack.
Does the 1:8 scale apply on Bedrock?
Yes, the ratio is the same in both editions. What differs is the search radius for an existing portal, not the conversion itself — which is why the form has an edition switch.
Unofficial tool. Not affiliated with the developers or publishers of Minecraft.