Minecraft
Nether Portal Sync
Portal linking confuses more Minecraft multiplayer groups than anything else, and nearly every case comes down to two Nether portals sitting close enough to compete for the same link.
Nether Portal Linker
Existing Nether Portal Position (Optional)
Portals within 16 blocks of each other can link — this checks for that.
Nether Coordinates
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How the numbers are worked out
Distances in the Nether are squeezed eight to one compared with the Overworld: walk eight blocks up top and you have covered one below. The calculator translates coordinates either way, and flags when a portal you are about to build would end up near enough to an existing one to link to it rather than making its own.
The formula
- nether = floor(overworld ÷ 8)
- overworld = nether × 8
- distance = √((x₁ − x₂)² + (z₁ − z₂)²)
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Common mistakes
The game searches a wide area for a partner portal, which is why portals that seem far apart still pair up. If two builds keep hijacking each other's portals, move the Nether-side portal further from its neighbour — changing the Overworld side will not fix it.
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