PortalMath

Plan portal travel with clear coordinate projections.

Look directly at an active Nether portal to see its approximate equivalent horizontal coordinates in the other dimension.

Features

• Automatic display while targeting an active portal within eight blocks.
• Both Overworld-to-Nether and Nether-to-Overworld calculations.
• Correct handling of negative coordinates.
• A compact, transparent display with small game-font text.
• Uses the targeted portal block as a clearly labeled source anchor.
• Hides when looking away, opening a menu, or hiding the HUD.
• Local settings to disable the display or shorten its range.

A useful estimate

PortalMath divides horizontal Overworld coordinates by eight, or multiplies Nether coordinates by eight. Displayed coordinates are rounded down to whole blocks. Height is not converted.

The result is a planning estimate, not a discovered portal link. Existing portals, linking rules, and placement can change the actual arrival location.