minecraftClassic tool
Nether Portal Calculator
Convert coordinates between the Overworld and the Nether and find the best matching portal spot.
Use this Nether portal calculator to convert coordinates between the Overworld and the Nether without redoing the math every time. It shows the matching point in the other dimension, the exact converted coordinates and a rounded portal suggestion for real block placement.
Enter the X and Z coordinates of your current location, choose whether you are traveling from the Overworld or from the Nether and keep Y as an optional height reference if you want. The result also shows where a rounded portal is likely to send you back, which helps reduce portal drift in travel hubs and long-distance routes.
Use clear inputs to get a more useful result.
How the coordinate conversion works
In Minecraft, the standard scale between the Overworld and the Nether is 8 to 1 on the X and Z axes. Going from the Overworld to the Nether means dividing X and Z by 8. Going from the Nether back to the Overworld means multiplying X and Z by 8.
Why rounding matters for linked portals
The exact converted point often lands between blocks, but an actual portal has to be built on whole blocks. That rounding can shift the return point by a few blocks when you travel back, especially when you are aligning hub corridors, tunnels or item transport routes.
When Y is still useful
Y is not part of the 8-to-1 scaling formula, but it can still help you plan a safe build height, compare cave entrances or keep a portal network organized. Use it as a reference, then adjust for lava, terrain and nearby existing portals before building.