Looking to make the switch to Bedrock?
Or maybe you downloaded a Java world but don't actually own Java edition? (So many classic worlds you can't miss out on!)
We'll walk you through the surprisingly simple process of converting your world from Java to Bedrock using the Universal Minecraft Tool.
Did you know that when Minecraft updates, only the parts of your world you visit will actually be updated? This can be a problem for converters.
For example, in the 1.18 Caves and Cliffs update the world height was expanded (0 to 255 became -64 to 320).
So, if your world was played on anything before 1.18 at any point and was also played on or after 1.18 at any point, then only those recently visited chunks have the new world height.
After conversion, all the pre-1.18 chunks will become empty under Y:0 where new terrain is supposed to be! Minecraft won't see anything wrong with that since it can't tell the difference between a converted chunk and one you might have just dug out by hand.
Only the Universal Minecraft Tool supports a feature called Allow Older Chunk Versions which detects scenarios like this and properly formats the output chunks to signal to Minecraft that the terrain needs to be updated.
For this reason alone, the Universal Minecraft Tool is the only proper tool for the job.
But there are other reasons too:
And so many more!
To begin, you'll need to tell to the UMT which world you're trying to convert.
Follow this guide to Open a Java World in the Universal Minecraft Tool
Click Bedrock to select it as the target output edition.
You'll notice a drop-down menu for selecting different target versions. This can be useful if you're trying to get more advanced with your world conversion, but for most cases you'll want to leave it on the latest version.
Click Next to continue.
This panel allows you to control certain technical aspects of how the conversion should run. Thankfully, for Java to Bedrock conversion you'll usually want to leave these at their default values.
Two very important settings you'll likely want to keep enabled are the Skip Partially-Generated Chunks and Allow Older Chunk Versions features. Both are crucial to ensuring you don't have any holes or empty spots in your world (as we mentioned earlier).
If you are converting a flatland world created on or after 1.18 to a version before 1.18, then you'll want to set the Depth Fixer conversion option to Raise.
This will raise your world up by 64 blocks ensuring the bottom of your world is repositioned from Y:-64 to Y:0.
It's the big moment!
Click Start Conversion to begin.
The UMT will now scan the input world and perform all the necessary conversion steps to create a super-accurate clone of your world for Bedrock edition.
After conversion, pick a spot to save the output world.
Click Save World to bring up the save window.
If you have Minecraft Windows 10 edition installed, the UMT will default to the install location of your Windows 10 edition worlds. Otherwise, you must pick somewhere else to put it.
Enter a name for the world, and click Save.
Congratulations! You've successfully converted the world.
Depending on where you play Bedrock edition, you may need to transfer the world to the right platform first. Check out the other platform-specific guides for more info.
Let the Universal Minecraft Tool simplify your life. Accomplish your tasks now.