About Nether Portal Calculator
Quickly convert coordinates between the Overworld and the Nether so your portals link up exactly where you want them. Enter a coordinate on either side and the matching coordinate is calculated instantly, plus a distance tool to plan fast Nether travel.
How Nether portal coordinates work
The Nether is eight times smaller than the Overworld, so one block in the Nether covers eight blocks up top. To find where a Nether portal should sit, divide your Overworld X and Z by 8; to go the other way, multiply the Nether X and Z by 8. The Y (height) coordinate is identical in both dimensions, so only X and Z ever change. This calculator does the division and multiplication for you and rounds to the block the game actually links to.
How to link two Nether portals correctly
Build and light your first portal in the Overworld and note its coordinates. Divide X and Z by 8 to get the target Nether coordinates, travel there, and build and light a second portal at that exact spot. Lighting it manually where you want it stops Minecraft from generating a brand-new portal somewhere nearby. Repeat in reverse to link portals you started from the Nether side.
Why a portal links to the wrong place
When you step through, Minecraft looks for an existing portal within roughly 128 blocks in the Overworld or 16 blocks in the Nether and links to the nearest one. If two destinations are close together they can end up sharing a portal, or the game spawns a new one off to the side. Building each portal precisely at the calculated coordinates, and keeping linked pairs far enough apart, keeps every connection where you expect it.
Frequently asked questions
- How do Nether portal coordinates work?
- The Nether is 8 times smaller than the Overworld. To find where a Nether portal should go, divide your Overworld X and Z by 8. To go the other way, multiply the Nether X and Z by 8. The Y (height) coordinate stays the same.
- How do I link two Nether portals?
- Build and light a portal in the Overworld, calculate the matching Nether coordinates (X and Z divided by 8), and build a second portal there. Lighting it manually at the exact spot stops the game from generating a new portal somewhere else.
- Does the Y coordinate change in the Nether?
- No. Only X and Z are divided or multiplied by 8. The height (Y) is identical in both dimensions. Note the Nether roof is at Y=128, so portals cannot generate above that.
- Why did my Nether portal link to the wrong place?
- Minecraft links to the nearest existing portal within about 16 blocks in the Nether (128 in the Overworld). If two portals are close together they can share a link, so build them precisely using the calculated coordinates to avoid this.