Exact Minecraft X/Z conversion
Nether Portal Coordinate Calculator
Convert one to twenty integer X/Z pairs between the Overworld and Nether using the exact 8:1 ratio. Keep exact results visible, choose Floor or Nearest block when you need an integer target, and copy valid rows locally without predicting portal links.
Convert one to twenty integer X/Z coordinate pairs between the Overworld and Nether with an exact 8:1 ratio. Results stay in this browser and describe a mathematical target, not a final portal link.
Every valid row is calculated synchronously and deterministically in this browser. There is no network request or saved batch.
mapmc-nether-coordinate-ratio-v1
Source X/Z
Coordinate pairs
Add from 1 to 20 X/Z pairs. Enter ASCII digits 0–9 with an optional single leading ASCII minus sign.
Batch coordinate conversion with explicit rounding
Convert one to twenty integer X/Z coordinate pairs between the Overworld and Nether with an exact 8:1 ratio. Results stay in this browser and describe a mathematical target, not a final portal link.
A coordinate target is not a portal link
Existing portals, portal search, generation, and placement rules can produce a different in-game outcome. This tool does not find or guarantee a final portal link.
Exact ratio, not a portal-link prediction
The calculator applies the 8:1 coordinate ratio to each X and Z value independently with BigInt rational arithmetic. It does not use a map, seed, or portal search.
Y is not part of this X/Z conversion. The calculator does not choose height or generate a /tp command.
Every valid row is calculated synchronously and deterministically in this browser. There is no network request or saved batch.