Minecraft seeds for servers: finding one and using it

Every Minecraft world is generated from a seed — a number that decides every mountain, cave, biome and village. The same seed on the same Minecraft version always produces the same terrain. Pick a good one and your server starts with an interesting spawn, a village nearby and good biomes in reach; pick at random and you might spawn in the middle of an ocean.

Finding your server’s seed

Run seed in the console (or /seed in game as an operator). It prints the number, which you can click to copy in game. On Cobbly the World tab shows it too, under Level Config.

Choosing a seed

The best way to pick a seed is to look at it before your friends do:

1. Create a single-player world in creative with the seed you are considering, on the same Minecraft version as your server.
2. Look around spawn: is there a village, a varied mix of biomes, water and wood close by?
3. Fly a few hundred blocks out in each direction.
4. Seed map websites such as Chunkbase show biomes and structures for any seed and version without generating anything — useful for checking where the nearest stronghold, ocean monument or ancient city is.

A seed can be a number or text. Text is converted into a number, so friends2026 is a perfectly valid seed — and easy to remember.

Using a seed on the server

The seed is only used when a world is created. Changing level-seed in server.properties after the world exists does nothing to it. To use a new seed you need a new world:

• On Cobbly, the World tab’s reset has its own seed field. See How to reset your Minecraft world.
• Elsewhere, stop the server, set level-seed, move or delete the world folder, and start it again.

Leave level-seed blank for a random world.

Seeds and Minecraft versions

A seed describes terrain for a version. The big terrain changes — caves and mountains in 1.18, for example — mean the same seed produces a completely different world on 1.17 and 1.18. Smaller updates often keep the landscape but change structures and biomes.

This matters when you update a server: chunks that already exist stay exactly as they were, but new chunks are generated by the new version. Where the two meet you may see sudden cliffs or biome borders. Most players never notice in the explored area; it shows at its edges. Updating your server to a new Minecraft version covers the rest.

Java and Bedrock seeds

Since 1.18, a seed produces the same terrain and biomes on Java and Bedrock Edition, so a seed shared online for one edition gives you the same landscape on the other. Structures — villages, temples, strongholds — are placed differently, so a “village at spawn” seed is only reliable on the edition it was found on.

Good to know

• Knowing the seed lets anyone find every structure and diamond-rich area with a seed map. On a competitive server, keep it private — non-operators cannot run /seed.
• World types change everything: the same seed with level-type set to minecraft:large_biomes or minecraft:amplified generates very differently.
• World-generation data packs and mods also change what a seed produces. See How to add data packs.