User blog:NC-Andarius68/Linking Nether Portals

A lot of people have trouble getting their nether portals to link where they want them on crowded servers and realms when builds are close together. Hopefully this will help you do it.

Build your portal in the overworld. Light it, but don't go through it.

Then do the math to where it should come out in the nether. (Divide by 8: also take note that some sources out there are wrong when they say the y coordinates don't matter. They actually matter very much, especially if you are making nether elevators via 3 way linked portals).

Anyway, now leave the area, build an extra portal far away, to get to the nether.

Then once you're in the nether, go to the calculated location (the overworld coordinates divided by 8) in the nether to where you want the portal.

Build it, light it, but don't go through.

Instead leave the nether via that extra far away portal you built, go back into the overworld and back to your original portal.

Go through it, and you will come out where you are supposed to.

If this didn't work, something went wrong. (Obviously, lol.) Recheck your math. Are you sure you didn't go through the portal before it was time? If so, you might have to break the portal and redo the steps. You can get nether portals closer than what the official Minecraft wiki says is their distance min limit if you follow these steps. Tested in Bedrock. Can't say for certain it works the same in Java.