Updated:
Syntax
/fillbiome <from> <to> <biome>
/fillbiome ~-16 ~-16 ~-16 ~15 ~15 ~15 minecraft:cherry_groveThe second line turns a 32×32×32 area around you into a cherry grove. You give two corners, just like /fill.
Useful biome IDs
| ID | What changes |
|---|---|
minecraft:cherry_grove | Brighter grass and water (1.20+) |
minecraft:mushroom_fields | Hostile mobs stop spawning naturally |
minecraft:snowy_plains | Snow instead of rain, and water freezes |
minecraft:desert | No rain at all |
minecraft:pale_garden | Grey, washed-out colors (1.21.4+) |
minecraft:plains | A neutral biome to reset to |
Press Tab while typing the biome to see every ID your version accepts.
How much you can change at once
Like /fill, one command can cover at most 32,768 blocks (32×32×32), so split bigger areas. On Java 1.20.3+ the limit is the commandModificationBlockLimit gamerule.
Biomes are stored in 4×4×4 cells, so edges snap to 4-block steps. You cannot change a single block's biome.
Replace only one biome
/fillbiome ~-16 ~-8 ~-16 ~15 ~8 ~15 minecraft:plains replace minecraft:desert
/fillbiome ~-16 ~-8 ~-16 ~15 ~8 ~15 minecraft:plains replace #minecraft:is_oceanOnly the biome named after replace changes. A # tag such as #minecraft:is_ocean matches a whole group.
What changes and what does not
- Changes: grass, leaf and water colors; rain or snow; which mobs spawn naturally; background music.
- Does not change: blocks already placed. A desert biome does not turn grass into sand. Use /fill or /clone for terrain.
Check the current biome
The F3 debug screen shows the biome where you stand. To find a different biome nearby, use /locate biome minecraft:cherry_grove (see the locate guide).
Bedrock Edition
Bedrock has no /fillbiome. Pick the biome when you create the world, or find the one you want with /locate and travel there.
Common problems
- "Too many blocks in the specified area": more than 32,768 blocks. Split the area.
- Success, but the colors look the same: walk away and come back, or rejoin the world.
- Unknown biome: check the spelling and your version. cherry_grove needs 1.20 and pale_garden 1.21.4.
- Area not loaded: you cannot change chunks that are far away. Go closer first.
Common questions
- Does a mushroom biome stop all monsters? It stops natural spawns. Spawners and trial spawners still work.
- Can I undo it? Run /fillbiome again with the old ID. Note the biome on the F3 screen before you change it.
- Survival worlds? Yes, with cheats on. Servers need operator level 2.
Check your command
The Command Error Doctor checks common syntax mistakes in your browser.