About Nether Portal Calculator

Nether Portal Calculator is an independent, browser-based tool for one narrow job: converting Minecraft Overworld and Nether X and Z positions, with transparent block rounding and honest linking caveats.

It was built because coordinate conversion is easy to get almost right and surprisingly easy to get wrong. Negative coordinates are a common failure point, Y is often divided by mistake, and a mathematically correct target is still not a guarantee that the game will connect the portal you expected.

What the project does not do

The calculator does not simulate portal generation, read your world, or claim to know where every existing portal is. It does not provide a Minecraft name generator, seed finder, fortress finder, or a general Minecraft tool directory.

Corrections and maintenance

The calculation engine is covered by automated tests, and the written equations are checked against the community-maintained Minecraft Wiki. If you find a wrong calculation or misleading explanation, report it with the page URL, edition, input coordinates, and the result you expected. A public contact address has not been published yet; see the contact page for the current status.

Independence

Nether Portal Calculator is an independent fan-made tool. It is not affiliated with, endorsed by, or sponsored by Mojang Studios or Microsoft.

“Minecraft” is a trademark of Mojang Studios. This project uses an original visual style and does not include copied game textures, logos, screenshots, or official assets.