Minecraft Seed Map

A seed is the number behind every Minecraft world — it decides where the biomes, oceans, villages, strongholds and every other structure end up. Two worlds made with the same seed and version generate identically, which is why a seed lets you preview a world before you ever create it.

In Java Edition, open the world and run the /seed command in chat. In singleplayer you can also see it on the world's edit screen. On a server you need operator permissions to run /seed.

No. The same seed number produces different worlds in Java and Bedrock because the two editions generate terrain and structures with different algorithms, and text seeds are converted to numbers differently too. Use the Java / Bedrock switch at the top to match your edition.

Paste your seed into the seed box and press Go. The map renders your world's biomes instantly in your browser — pan by dragging and zoom with the scroll wheel or pinch. Pick your game version and dimension to match your world exactly.

For Java Edition, the biomes and structure positions match what the game generates for that seed and version. A few terrain-dependent details (a ruined portal's exact type, a shipwreck's precise orientation) can shift slightly when the world actually generates, so treat those as very close rather than pixel-perfect.

That's up to you and how you like to play. Plenty of players use a seed map to plan a base, scout a speedrun route, or pick a world with the biomes they want before committing hours to it — the same way you'd read a guide. In multiplayer, check your server's rules.

Villages, trial chambers, ancient cities, ocean monuments, woodland mansions, pillager outposts, desert and jungle temples, witch huts, igloos, shipwrecks, ocean ruins, buried treasure, trail ruins, ruined portals, mineshafts, nether fortresses, bastion remnants, end cities and gateways — plus world spawn, all 128 strongholds and slime chunks.

Yes — switch to Bedrock at the top. Bedrock structure positions (villages, ancient cities, buried treasure and more) are computed with Bedrock's own placement, so they match your Bedrock world. Bedrock biome maps are shown for 1.16 and 1.17; on newer Bedrock versions the map shows structures only, because Bedrock changed to a biome-generation method that hasn't been reverse-engineered.

Make sure the version selector matches the version your world was first generated in — structure positions change between versions. Terrain-dependent pieces (like a shipwreck's exact ship) can also vary, and a few structure spots can be displaced by terrain when the world actually generates.

Yes — slime chunks are computed with the exact Java Edition formula from your seed, so every highlighted chunk spawns slimes below Y=40 in your world. Zoom in and toggle the Slime Chunks overlay to see them.

The map runs the world engine right in your browser, so it needs JavaScript and WebAssembly enabled. A very old browser, or a strict privacy blocker, can stop the engine from starting — try refreshing the page or a different browser. If a version looks wrong, double-check the version selector at the top.