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Minecraft Nether Coordinate Calculator
The Nether is the Overworld compressed horizontally by a factor of eight. Divide by 8 to go in, multiply by 8 to come out, and leave Y alone. This tool does that conversion in both directions and shows what the rounding actually costs you.
The rule, in one line
Overworld to Nether: divide X and Z by 8. Nether to Overworld: multiply X and Z by 8. Y never changes. That is the whole conversion — everything else on this page is about the ways it surprises people.
Why only the horizontal axes
The two dimensions are the same height but different width. The Overworld is a huge, spread-out map; the Nether is a much smaller map that represents the same territory. Moving one block in the Nether therefore puts you eight blocks further along in the Overworld, in both the X and Z directions.
Height is not compressed, which is why Y is copied straight across. A portal at Y 64 in the Overworld is at Y 64 in the Nether — and since large parts of the Nether are open terrain around that height, this is usually convenient rather than annoying.
Worked examples
| Direction | Input (X / Y / Z) | Output (X / Y / Z) | What it means |
|---|---|---|---|
| Overworld → Nether | 800 / 64 / −1600 | 100 / 64 / −200 | A base 1,600 blocks south becomes 200 blocks south |
| Nether → Overworld | 100 / 64 / −200 | 800 / 64 / −1600 | The same trip in reverse |
| Overworld → Nether | 103 / 70 / −103 | 13 / 70 / −13 | Not divisible by 8, so both axes round |
| Overworld → Nether | 5 / 64 / 5 | 1 / 64 / 1 | 5 ÷ 8 = 0.625, which rounds up to 1 |
Notice the third row: 103 ÷ 8 = 12.875, which rounds to 13. That rounding is the first source of drift between a portal you plan on paper and where the game actually puts you.
The rounding is where plans break
Coordinates in Minecraft are whole blocks. Dividing by 8 rarely gives a whole number, so the game has to round — and rounding a Nether coordinate back up to the Overworld can land you up to ±4 blocks from where you intended, because one Nether block spans eight Overworld blocks. Round one way, then convert back, and you will often see a small mismatch.
Practically: pick the Nether coordinate first, then multiply to get the Overworld target. If you do it the other way round, the Overworld position you derived is the one that gets approximated, and that error is the one that gets multiplied by eight.
Why your two portals missed each other
This is the question that actually brings people to a converter. The maths above is exact, but portal linking is not pure maths:
- The game scales your coordinates and rounds to whole blocks.
- It then looks for an existing portal near that point before deciding to build a new one.
- Because the Nether is compressed, two Overworld portals that are far apart can both sit near the same Nether coordinates — and then they link to the same Nether portal, or to each other, instead of to the one you intended.
So a converter tells you where to aim, not where the game will place you. The reliable habit is: build the first portal, note its exact coordinates, convert, and then build the second one as close to the calculated point as the terrain allows. If a link goes wrong, the fix is usually to move one portal a few blocks rather than to redo the arithmetic.
Using it as a travel calculator
Because one Nether block equals eight Overworld blocks, the Nether is the standard long-distance shortcut. A journey of 8,000 blocks in the Overworld is only 1,000 blocks in the Nether, which is the difference between a trip you make once and a route you build a tunnel through.
Two habits that make Nether routes dependable:
- Build the pair, not one portal. A portal is only useful if both ends are where you want them; a lone portal deep in the Nether is a one-way trip to nowhere.
- Write the coordinates down on the page, not in your head. The single most common cause of a broken link is converting an approximate "somewhere around here" position, because the error is multiplied by eight on the way out.
Frequently asked questions
Do I need to convert Y at all?
No. Y is identical in both dimensions. If a converter changes your Y, it is wrong. The only Y work is choosing a height that is reachable on both sides — usually somewhere in the 60s to 70s in the Overworld.
Why is my Nether coordinate not exactly a whole number?
Because most Overworld coordinates are not divisible by 8. The tool rounds to the nearest block, which is what the game does in effect. If you want exactness, choose Nether coordinates first and multiply by 8 — the result is always a whole number.
Can two Overworld portals share one Nether portal?
Yes, and it happens often. If both Overworld portals convert to points close together in the Nether, the game can link both to the same nearby Nether portal. Spacing the Overworld portals at least 8 blocks apart in both X and Z keeps them at least 1 block apart in the Nether, which is the minimum for them to stay separate.
Does this work in Minecraft Bedrock as well as Java?
The 8:1 ratio is the same in both editions. The details of how portals find each other differ between editions, so a link that behaves one way in Java may behave slightly differently in Bedrock — but the coordinate conversion itself is identical.
Sources
- 8:1 Overworld-to-Nether horizontal ratio and unscaled Y — Minecraft game behaviour, cross-checked against the official Minecraft Wiki's Nether portal article, checked 25 October 2026.
- Portal search and rounding behaviour — described qualitatively on purpose; see the note above.
- Official game site — minecraft.net
Game behaviour can change with major updates. If this page disagrees with what your own world does, the game wins — and please tell us so we can fix it.