Minecraft Seed Generator for Java & Bedrock

A seed you can copy and, for Java worlds, the predicted spawn point with X and Z coordinates, the biome at spawn and a biome map covering 320 × 320 blocks around spawn. You also get the line for server.properties. Example: seed 12345 gives a spawn point at X 96 / Z -32 in the Dark Forest biome in Java 1.21. The line is level-seed=12345.

The seed is the number Minecraft uses to generate the entire world: terrain, biomes, caves, and structures. The same seed always produces the same world in the same version. If you enter text, Minecraft converts it to a number. If you leave the field blank, the game generates a seed itself. In the Seed Generator, you can also enter your own seed as a number or text.

Java seeds are 64-bit numbers, giving 2⁶⁴ possible values—over 18 quintillion. Bedrock uses 32-bit numbers, giving 2³² values, or about 4.3 billion. The generator picks a random number from the range for your selected edition, excluding only 0.

In Java Edition, the /seed command shows the seed. On a server, you need operator permissions, or you can enter the command in the server console. In Bedrock Edition, the seed is in the world settings. If you can’t access commands or settings, you’ll need to ask the server owner.

Enter the seed in server.properties before generating the world for the first time, for example level-seed=12345. A seed only takes effect when a new world is generated: an existing world keeps its seed even if you change level-seed. If you have a Minecraft server with ZAP-Hosting, you can apply a Java seed directly from the tool without editing the file yourself. “Create a new world with this seed” also sets a new world name: the server starts with a new world folder, and your previous world remains saved.

Java uses 64-bit numbers; Bedrock uses 32-bit numbers. The generator therefore generates a number within the Bedrock range for Bedrock. Since version 1.18, both editions have generated the same biomes from the same seed. Bedrock determines the spawn point differently, though, so the tool only shows the spawn point and spawn biome for Java. You can see the biomes of a Bedrock seed in Seed Map.

Yes, for Java. Select a biome under “Spawn biome,” and the tool will try up to 3,000 seeds to find one that spawns you there. Each biome shows how often it occurs as a spawn biome. In Java 1.21, for example, 19 % of seeds spawn you in Plains, 4 % in Desert, and only 0.3 % in Cherry Grove.

The spawn is a prediction. We compared it with newly generated worlds on real vanilla servers running version 1.21.4: it's usually accurate to the block. If the spawn is near water, it may be off by a few dozen blocks. The tool does not calculate the height (Y). Select the version you'll use to generate the world: 1.21 also covers newer versions, while older versions may generate a different world from the same seed.

Yes. Seed generation and calculations run as WebAssembly directly in your browser, using the open-source cubiomes library. Your seed isn’t sent to us unless you transfer it to your server yourself.