How to Set and Manage a Minecraft World Border

Direct answer

Run /worldborder center 0 0 to set the centre and /worldborder set 1000 to make a 1,000-block-wide border. The size is the diameter, not the radius.

Recommended procedure

1. As an operator, decide the centre (X and Z coordinates) and the total diameter before making changes.
2. Run /worldborder center 0 0 or use your intended X/Z centre.
3. Run /worldborder set 1000 for a 1,000-block diameter.
4. Run /worldborder get to confirm the size.
5. When shrinking a populated world, warn players and check that important builds, spawn and travel routes remain accessible.

Why this matters

A border controls where players can travel; it does not remove existing chunks outside the border or automatically pre-generate terrain within it. Coordinate it with world generation and backup plans.

How to verify the result

Use /worldborder get, inspect the visible border near its edge, and confirm that all intended destinations are inside it. Check the world being affected if you have world-management plugins.

Version and compatibility notes

Java 1.21.11 updated how timed world-border transitions interpret time arguments. For an instant change, the commands above avoid time-unit differences.

Official references

• Mojang — Java 1.21.11 world-border changes

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