Use this calculator to see where you should put your nether portals in Minecraft.
A Minecraft Nether Portal Calculator. The calculation behind the nether portal is relatively simple, but every so often we all need a little help when calculating the perfect place to put our nether portal.
With this handy little chrome extension you can have the calculator right at your fingertips!
Input the X/Y/Z of your Overworld coordinates to find the correct location for the linking Portal in the Nether. You can even do it the other way around.