How to customize the world seed of a Minecraft server

A world seed controls how your Minecraft world is generated. You can set a custom seed to get a specific world layout, biomes, and structures.

Before you start

• Back up your world if you want to keep it.
• Make sure you have access to the server files or settings in your hosting panel.

Set a custom seed

1. Stop your Minecraft server.
2. Open the server.properties file.
3. Find the level-seed setting and set it to your desired seed.

Example:

level-seed=123456789

You can also use a text seed:

level-seed=CoolSeed123

4. Save the file.

Generate a new world

To apply the new seed, you need a new world. Choose one of these options:

• Delete the current world folder and start the server.
• Change level-name to a new world name and start the server.

When the server starts, it will generate a new world using your seed.

Verify the seed in-game

If you have operator permissions, you can check the active seed with:

/seed

FAQ

Where is the seed stored?

The seed is stored in the level-seed setting inside server.properties.

The seed did not change

This usually means the server kept using the old world. Make sure you generated a new world by deleting the world folder or changing level-name.