How to Use WorldEdit (Beginner Commands)

Guide Java Bedrock

Quick answer: WorldEdit is a free mod/plugin: get the wooden axe with //wand, left-click one corner and right-click the opposite corner to select, then run commands like //set stone, //replace dirt stone, //copy and //paste. //undo fixes mistakes.

What you need

WorldEdit (free): Fabric/NeoForge mod or server plugin
Cheats or operator permissions
A wooden axe (the //wand)

Step by step

Install WorldEdit free: as a Fabric/NeoForge mod for singleplayer, or as a plugin on your server. Modrinth and the official site have it.
Run //wand to get the wooden axe. Left-click a block for position 1, right-click another for position 2 - the selection is the box between them.
Fill the selection: //set stone fills everything with stone. //set 50% stone,50% dirt mixes blocks.
Replace instead of erase: //replace dirt stone swaps only dirt to stone, leaving the rest untouched.
Copy and paste builds: //copy copies relative to where you stand, //paste puts it down at your feet. //rotate 90 turns the clipboard first.
Mistakes: //undo reverts your last action, //redo brings it back. Use them freely while learning.
Handy shapes: //sphere stone 5, //cyl stone 5 1 and //walls stone build quick geometry without selections.

Java vs Bedrock

Java only - WorldEdit does not exist for Bedrock. Bedrock's closest option is the /fill command.

Versions: WorldEdit tracks every Minecraft release on both Fabric and NeoForge, plus server platforms. Command syntax is stable for years.

Frequently asked questions

Is WorldEdit free?

Yes - the mod and plugin are free from Modrinth or the official WorldEdit site. Never pay for it.

Can I crash my server with WorldEdit?

Huge selections (millions of blocks) can lag or crash - work in smaller chunks and keep //undo close.