Nether Portal Calculator
Line up your portals. Enter X and Z coordinates and pick a direction — Overworld to Nether divides by 8, Nether to Overworld multiplies by 8 — to get the matching coordinates. The Y height stays the same.
Example: with X coordinate 200 · Z coordinate -150 · Y coordinate (height) 64 · Direction Overworld to Nether (÷8) → Target coordinates: X 25, Y 64, Z -19.
- Target X25
- Target Z-19
- NoteDivide by 8. Build a Nether portal here so it links back.
Computed by the calculator below using its default values. Change any input to see your own numbers.
Coordinates map 1:8 between dimensions. Divide Overworld X and Z by 8 for the Nether; multiply by 8 to go back. The Y (height) coordinate is the same in both.
Why the Nether is eight times smaller
One block in the Nether equals eight blocks in the Overworld. That 1:8 ratio is deliberate: it lets you cover huge Overworld distances quickly by walking a short stretch in the Nether and stepping back through a portal. Traders and base-builders use it to connect far-flung places with a compact tunnel network.
To find where an Overworld spot lands in the Nether, divide its X and Z by 8. To find where a Nether spot lands in the Overworld, multiply by 8. Height is the exception — the Y coordinate does not scale and stays identical in both dimensions.
Making portals link reliably
Portals connect by proximity, not by exact match. When you enter a portal, the game looks for an existing portal near the scaled coordinates and links to it; if none is close enough, it builds a new one, sometimes in an awkward spot. Building your own portal at the calculated destination avoids surprise links.
For two Overworld portals to stay separate, keep their Nether counterparts far enough apart. Placing and lighting a portal at the exact target coordinates you get here is the surest way to control which portal ties to which.
How it’s calculated
Overworld to Nether: divide X and Z by 8. Nether to Overworld: multiply X and Z by 8. The Y (height) coordinate is unchanged between dimensions. Results are rounded to the nearest whole block, which is where you would place the portal.
Standard 1:8 horizontal scale. Portal linking also depends on search ranges and existing nearby portals, so building at the exact target coordinates gives the most predictable result.
Overworld to Nether examples
| Overworld (X, Z) | Nether (X, Z) |
|---|---|
| 0, 0 | 0, 0 |
| 200, -150 | 25, -19 |
| 800, 800 | 100, 100 |
| 1000, 0 | 125, 0 |
| -2000, 640 | -250, 80 |
Computed with the 1:8 rule (Overworld ÷ 8 = Nether), rounded to the nearest block.
Common mistakes
- Scaling the Y coordinate — height is identical in both dimensions and should not be divided or multiplied.
- Multiplying when going to the Nether; you divide by 8 heading in and multiply by 8 heading out.
- Expecting portals to link exactly — the game links to the nearest portal within a search range, so build at the target to be sure.
- Forgetting the sign on negative coordinates when dividing or multiplying.
Frequently asked questions
How do I convert Overworld coordinates to the Nether?
Divide the X and Z coordinates by 8. So Overworld X 200, Z -150 becomes Nether X 25, Z about -19. The Y height stays the same.
How do I go from the Nether back to the Overworld?
Multiply the Nether X and Z by 8. A Nether portal at X 25, Z -18 points to Overworld X 200, Z -144.
Does the Y coordinate change between dimensions?
No. Only X and Z scale by the 1:8 ratio. The Y (height) coordinate is the same in the Overworld and the Nether.
Why do my portals link to the wrong place?
Portals connect to the nearest existing portal within a search range around the scaled coordinates. If one is nearby it links there; building your own portal at the exact target avoids it.
Why is Nether travel so fast?
Because one Nether block equals eight Overworld blocks, a short walk in the Nether covers a long Overworld distance, making it ideal for connecting distant bases.