| Property |
|---|
| Height |
| Min Y |
| Max Y |
| Logical Height |
| Coordinate Scale |
| Ambient Light |
| Has Skylight |
| Has Ceiling |
| Ultrawarm |
| Bed Works |
| Respawn Anchor |
| Fixed Time |
| Dragon Fight |
| Monster Light Limit |
Minecraft Java Edition defines 4 dimension types: the Overworld (384 blocks tall, Y -64 to Y 320), Overworld Caves (same height but with a ceiling), The Nether (256 blocks, coordinate scale 8 to 1), and The End (256 blocks, fixed time, Ender Dragon fight). Each dimension has distinct rules for lighting, mob spawning, and player mechanics.
The dimension browser above displays every property for each dimension type side by side. This includes build height limits, coordinate scale values, ambient light levels, mob spawn light thresholds, bed behavior, and respawn anchor support, all pulled straight from the game registry.
If you are building a data pack with custom dimensions, this tool serves as a reference for the vanilla values to use as starting points.
Every Minecraft dimension is defined by several key properties that control build space, lighting, and player mechanics. Here is how the three main dimensions compare:
| Property | Overworld | Nether | End |
|---|---|---|---|
| Height | 384 (Y -64 to 320) | 256 (Y 0 to 256) | 256 (Y 0 to 256) |
| Logical Height | 384 | 128 | 256 |
| Coordinate Scale | 1 | 8 | 1 |
| Has Skylight | Yes | No | Yes |
| Has Ceiling | No | Yes | No |
| Ambient Light | 0.0 | 0.1 | 0.25 |
| Beds Work | Yes (sleep at night) | Explode | Explode |
| Respawn Anchor | No | Yes | No |
Nether travel: 
The Nether's coordinate scale of 8 means 1 block in the Nether equals 8 in the Overworld. To calculate portal placement, divide your Overworld X and Z coordinates by 8. Our Nether Portal Calculator automates this conversion.
Mob-proofing: The Overworld's monster spawn light level is a random value between 0 and 7, meaning mobs can spawn at light level 0 only in the darkest conditions. In the Nether, the block light limit is 15, which means monsters spawn regardless of light level. Mob-proofing the Nether requires slabs or other spawn-blocking blocks, not torches.
Nether roof builds: The Nether's logical height is 128 while its actual height is 256. You cannot place blocks above Y 128 normally, but the space between Y 128 and Y 256 exists. This is the Nether roof, a popular location for infrastructure on servers since hostile mobs cannot spawn there.
Minecraft has 3 playable dimensions (Overworld, The Nether, The End) and 4 registered dimension types (Overworld, Overworld Caves, The Nether, The End). The Overworld Caves type is used for the Overworld when accessed via specific world configurations and adds a ceiling but otherwise shares the same properties as the regular Overworld.
The Nether has a coordinate scale of 8, meaning every 1 block traveled in the Nether equals 8 blocks in the Overworld. This makes Nether travel the fastest way to cover long distances. A portal at X=100 in the Nether corresponds to X=800 in the Overworld.
The Overworld has a total height of 384 blocks, ranging from Y -64 to Y 320 (logical height 384). The Nether has a height of 256 blocks (Y 0 to Y 256) but a logical height of only 128, meaning you cannot place blocks above Y 128. The End has a height of 256 blocks (Y 0 to Y 256) with full logical height of 256.
Beds explode in the Nether and End because their dimension type data has the bed explodes property set to true and sleeping set to never. This is a game mechanic, not a bug. Players commonly exploit this for ancient debris mining in the Nether, as the explosion breaks nearby blocks and ancient debris is blast-resistant.
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