Mining Minecraft · Playtest · Nether
How far off is a brand-new Nether portal?
Build a Nether portal in the grass world, light it, and step through. Players often divide their map numbers by 8 to guess where they will come out in the Nether. I checked 12 first trips in Java. Most exits were only a few blocks off that guess. That does not mean the portal is broken.
Typical miss
~4.5
Nether blocks sideways from the usual map guess to the middle landing (of 9 arrivals).
Close enough
8 of 9
First exits within 16 Nether blocks of that guess, in this Java test.
Most first exits miss by only a few blocks
You light a Nether portal — the obsidian frame that sends you to Minecraft’s hell dimension — and step through the purple swirl. The grass world is gone. Red sky, netherrack, lava.
Players often divide their Overworld map numbers by 8 to guess where they will come out. If you stand at Overworld X = 800, people aim near Nether X = 100. I wanted to know how far off that first exit really is when nothing is waiting on the other side yet.
I tested it in Java 1.21.8. Twelve brand-new Overworld frames. No old Nether portal nearby. Of the nine pigs that arrived, the middle miss was about 4.5 blocks sideways from that guess. Eight of nine still landed within 16 blocks.
The two worlds do not line up one-to-one. In Java, 1 block in the Nether equals 8 blocks in the Overworld. Walk 1,000 blocks through the Nether and you have covered about 8,000 blocks of grass-world distance. That shortcut still works. The door just refuses to sit on the exact block you circled.
I sent pigs through so my walking would not mix in
Standing in the Nether myself would have mixed my own walking with the portal’s landing. So each try looked the same: build a lit Overworld portal, send a pig through, and mark where it landed.
I spaced the Overworld portals far apart so one exit would not steal the next pig. Nine pigs arrived. Three never showed up on my test server. That is a setup fuss, not a claim that Survival portals fail a quarter of the time.
The exit sits on nearby ground, not the exact map block
The exits were not perfect. They were not a disaster either.
I only measured map distance (east-west and north-south) and ignored how high or low the frame sat.
How far each landing missed (Nether blocks)
Shorter bar = closer to the usual guess. Nine arrivals, sorted. Green is within 16 blocks.
The closest landing was under 1 block off. The farthest was about 21. Six of nine landed within 8 blocks. Eight of nine stayed within 16.
So the divide-by-8 guess still worked as a compass: it pointed the right way. The exit frame just refused to sit on that exact block. The Nether is lava, cliffs, and awkward ground. The exit lands on nearby solid ground instead of the exact block you circled.
Keep using divide-by-8 when you plan a first portal. Do not expect the door to land on the exact block you circled on the map. Two Overworld portals fighting over one Nether exit is a different problem; I spaced these trials so that fight would not show up here.
See also
The numbers (full miss table)
Optional deep dive. The answer above stands without this table.
| Stat | Value |
|---|---|
| Middle sideways miss (median) | ~4.5 blocks |
| Average sideways miss | ~7.3 blocks |
| Closest / farthest | ~0.7 / ~21.1 blocks |
| Within 8 blocks | 6 / 9 (~67%) |
| Within 16 blocks | 8 / 9 (~89%) |
Ideal aim = Overworld X and Z divided by 8 (floored), same height as the Overworld portal. Overworld X ran 0, 400, 800… so ideal Nether X sat 50 apart — wider than Java’s ~16-block Nether search range — so each create stayed independent.
How I calculated it
Vanilla 1.21.8 dedicated server, flat Overworld, seed 801801.
Per trial: load the Overworld and Nether windows, clear nearby portal blocks, build a lit frame, summon a pig, wait, read its Nether position.
Sideways miss = distance on the map plane only (ignores height).
Sources
- This Java playtest (12 portals, 9 arrivals, 2026-08-14). How I run these tests: How I test Minecraft in Java worlds.
- Mojang Studios. Java Edition 1.21.8 dedicated server.
- Minecraft Wiki. Nether Portal notes (scale and search range context).
- FAQ companion: Why does the Nether shorten every journey?
