Minecraft Calculators
Calculators and references that don’t need a seed — Java & Bedrock.
- Nether Portal CalculatorLink Overworld and Nether portals — coordinates ÷ 8 and search ranges.
- Seed ConverterTurn a text seed into its numeric value (String.hashCode, same on Java and Bedrock).“Herobrine”10528182
- Spawn Chunk CalculatorWhich chunks stay loaded around world spawn, by version.
- Coordinate CalculatorConvert between block, chunk and region coordinates, and measure distance.
- Skin ViewerSee any Java player's skin, a Bedrock gamertag's or your own PNG in 3D, then get it as a Bedrock skin pack.
- XUID LookupFind the XUID of any Xbox gamertag, or the gamertag behind an XUID, with the hex and Floodgate forms.GamertagXUID00000000-0000-0000-0009-…
- Gamertag CheckerCheck if an Xbox gamertag is taken before you try to change yours.BlockyFox✓ freeSteve✗ taken
- Ore LevelsBest Y levels for every ore, before and after the 1.18 world height change.
- Slime Seed FinderSeeds with the most slime chunks around your farm spot, or your own slime-chunk pattern.12345
- Slime Chunks ExplainedHow slime chunks work on Java vs Bedrock, and how to farm them.
Which one do you need?
The seed map answers questions about one particular world. These answer questions that do not depend on the seed: where a portal will link, which chunk a block is in, which chunks stay loaded, how deep to dig. They are the sums we kept doing on paper next to the map, so we built them once.
- Building a second Nether portal? The portal calculator divides by eight for you and shows the square the game searches for an existing portal, which is where most wrong links come from.
- Building a beacon? The beacon calculator on our sister site counts the blocks and ingots for each pyramid size, shows which powers you unlock, and finds the stained glass for a beam colour.
- Placing a farm that must keep running? The spawn chunk calculator draws the loaded area for your spawn and version; it shrank in 1.20.2, so old tutorials often get it wrong.
- Copying or deleting part of a world? The coordinate calculator turns a block into its chunk and its region file, and measures distances in blocks, chunks and Nether blocks.
- Not sure how deep to mine? Ore levels charts every ore by height for 1.18 and later and for older worlds, with the best level for each.
- Got a word as a seed? The seed converter shows the number the game turns it into; capital letters give a different world.
- Planning a slime farm? Slime chunks explained checks a single chunk and explains why Java and Bedrock disagree; the slime seed finder searches for seeds with the best cluster.
Every calculator works the same on Java and Bedrock unless it says otherwise, runs in your browser, and links to the guide that explains the rule behind it. For the rules themselves, start with coordinates, chunks and regions and Nether portal linking.