How do Nether coordinates work?

One block traveled in the Nether equals eight blocks in the Overworld: X and Z are divided by 8 going in and multiplied by 8 coming out. The Y coordinate is not scaled.

Why does my portal lead to the wrong place?

Minecraft searches for an existing portal within 16 blocks (Nether: 128 blocks in Overworld terms) of the ideal exit. If your portals aren't at matching converted coordinates, a different portal wins - build the second portal at the calculated position to fix the link.

What is a chunk and why does it matter?

A chunk is a 16x16 block column the world is stored and loaded in. Chunk borders matter for farms, spawn mechanics and performance - the calculator shows the chunk for any coordinate (block X and Z divided by 16, rounded down).

Which region file contains my base?

Regions bundle 32x32 chunks into one r.X.Z.mca file. The tool computes the file name from any coordinate, so you can back up or restore exactly the right file.

How far is 1 Nether block of travel worth?

Eight Overworld blocks. An ice-boat Nether highway effectively multiplies your travel speed by 8, which is why long-distance connections are almost always built through the Nether.

Does the 8:1 rule apply to Bedrock too?

Yes - both editions use the same 8:1 X/Z scaling, so the calculated portal positions work in Java and Bedrock alike.

Coordinate Calculator

Convert coordinates between the Overworld and the Nether, measure distances and look up chunk & region info

Nether ⇄ Overworld

OverworldNether

Overworld

XYZ

Nether

125

-94

Teleport command

/tp @s 125 64 -94

1 block in the Nether equals 8 blocks in the Overworld (X and Z). Y is not scaled.

Distance Calculator

Point A

XYZ

Point B

XYZ

3D distance

269.33 blocks

2D distance (X/Z)

269.26 blocks

ΔX

100

ΔY

ΔZ

-250

Chunk & Region Info

Block position

Chunk

62, -47

Position in chunk

8, 2

Region

1, -2

Region file

r.1.-2.mca

A chunk is 16×16 blocks; a region file stores 32×32 chunks (512×512 blocks).

All coordinate math in one tool

Convert coordinates between the Overworld and the Nether at the exact 8:1 ratio, measure 2D and 3D distances between two points and look up which chunk and region file any position belongs to. Essential for linking Nether portals precisely, planning Nether highways and debugging chunk-related issues.

Nether ↔ Overworld conversion

X and Z divide by 8 into the Nether and multiply by 8 back - the tool converts both directions instantly, Y stays untouched.

Portal linking helper

See exactly where to build the matching portal so both sides link to each other instead of spawning stray portals.

2D and 3D distance

Measure the straight-line distance between two points - horizontally (ignoring height) and in full 3D.

Chunk lookup

Every position resolves to its chunk coordinates and the block's position inside the 16x16 chunk.

Region file finder

Find the r.X.Z.mca region file that contains a coordinate - invaluable for world editing and backup surgery.

F3-friendly input

Paste coordinates straight from the F3 debug screen; the tool parses full X/Y/Z triples for you.

How to link two Nether portals

1
Read the Overworld position
Stand at your Overworld portal and note X, Y and Z from the F3 screen (or the Bedrock coordinates display).
2
Convert to Nether coordinates
Enter the position - the tool divides X and Z by 8 and gives you the target point in the Nether.
3
Build the portal there
Travel to those Nether coordinates (a similar Y helps) and build the portal - both portals now link reliably.

Frequently asked questions

How do Nether coordinates work?: One block traveled in the Nether equals eight blocks in the Overworld: X and Z are divided by 8 going in and multiplied by 8 coming out. The Y coordinate is not scaled.
Why does my portal lead to the wrong place?: Minecraft searches for an existing portal within 16 blocks (Nether: 128 blocks in Overworld terms) of the ideal exit. If your portals aren't at matching converted coordinates, a different portal wins - build the second portal at the calculated position to fix the link.
What is a chunk and why does it matter?: A chunk is a 16x16 block column the world is stored and loaded in. Chunk borders matter for farms, spawn mechanics and performance - the calculator shows the chunk for any coordinate (block X and Z divided by 16, rounded down).
Which region file contains my base?: Regions bundle 32x32 chunks into one r.X.Z.mca file. The tool computes the file name from any coordinate, so you can back up or restore exactly the right file.
How far is 1 Nether block of travel worth?: Eight Overworld blocks. An ice-boat Nether highway effectively multiplies your travel speed by 8, which is why long-distance connections are almost always built through the Nether.
Does the 8:1 rule apply to Bedrock too?: Yes - both editions use the same 8:1 X/Z scaling, so the calculated portal positions work in Java and Bedrock alike.