Chunker App is a powerful and user-friendly Java application developed by HiveGamesOSS that allows Minecraft players to convert worlds between Java and Bedrock editions with ease. Whether you’re a content creator, server admin, or just someone switching platforms, Chunker gives you full control over your Minecraft world files supporting cross-version upgrades, optimizations, and even dimension-level editing.

Features:
- Bidirectional World Conversion
Convert Minecraft maps between Java (e.g., 1.21.5) and Bedrock (e.g., 1.21.44) formats for cross-platform access and sharing. - Version Upgrading & Downgrading
Easily move worlds between different Minecraft versions. Perfect for reverting a world for older mods or updating to match a friend’s version. - Advanced Mode Options
Fine-tune your world with powerful tools:- World trimming: Remove unnecessary or unexplored chunks to reduce world size.
- Dimension remapping: Redirect dimensions during conversion (e.g., treat End as Overworld).
- World setting editing: Customize key properties, rules, and terrain generation details.
- Nether Terrain Refresh Support
Regenerate or update your Nether terrain with newer biome and generation settings while preserving Overworld progress. - Data Preservation
Chunker retains most:- Entities
- Structures
- Player inventories
- World spawn data
- Open Format Compatibility
Supports both.mcworld
Bedrock files and traditional Java Edition save folders. - Optimized for Performance
Processes large maps efficiently while minimizing memory use or conversion errors.
Screenshots:






















How to Use:
- Download and Install
- Get Chunker App from the official source or trusted mirror.
- Open the Application
- Launch the app and choose your input world:
- For Java, select the world folder containing
level.dat
. - For Bedrock, select the
.mcworld
file.
- For Java, select the world folder containing
- Launch the app and choose your input world:
- Choose Output Settings
- Set your desired target format (Java or Bedrock).
- Select the target Minecraft version (e.g., Java 1.21.5 or Bedrock 1.21.44).
- Convert
- Click “Convert” to begin.
- The app will export the new world format.
- Import into Minecraft
- For Java: Place the converted world in
.minecraft/saves/
- For Bedrock: Simply open the
.mcworld
file to import.
- For Java: Place the converted world in
- Teleport or Test
- Launch Minecraft, open the converted world, and explore your structures.
Troubleshooting:
- Error: “Failed to get world settings”
- Try deleting and re-importing the world.
- Check version compatibility some oversized or corrupted world files may cause this.
- Structures Missing or Incomplete?
- Some complex entities or structure data (e.g., villages, fortresses) may not convert perfectly. Manual fixing may be required post-conversion.
Why Use Chunker App?
If you’re looking for the easiest and most reliable way to convert Minecraft worlds between Java and Bedrock, Chunker is your best option. It’s free, open-source, and supports advanced customization, making it ideal for:
- Cross-platform survival play
- Content sharing
- Server migrations
- Classroom use
- Map optimization
FAQs
Can I convert modded Java worlds?
Basic structures and terrain may convert, but modded blocks or entities may not appear correctly in Bedrock.
Does Chunker work with Realms?
Yes. Convert your world to Bedrock and import it to Realms by opening the .mcworld file in the Bedrock Edition.
Will I lose player inventory during conversion?
No. Chunker preserves player inventory, positions, and basic world settings wherever possible.
Can I convert large survival worlds?
Yes, but it may take longer. Use the trimming option in Advanced Mode to reduce world size before converting.
Is Chunker App free?
Yes, it is a free and open-source tool created by HiveGamesOSS.
Download links
- Download from Server 1:download Download file
- Linux Amd64 version (AppImage file):download Download file
- Linux Amd64 version (Deb file):download Download file
- Linux Amd64 version (Zip file):download Download file
- MAC Amd64 version (Dmg file):download Download file
- MAC Amd64 version (Zip file):download Download file
- MAC Arm64 version (Dmg file):download Download file
- MAC Arm64 version (Zip file):download Download file
- Windows x86 version (Exe file):download Download file
- Windows x86 version (Zip file):download Download file