For Minecraft: Java Edition, see Upload a World to a Minecraft: Java Edition Realm
If you don’t want to start a new world on your Minecraft Realm, here’s how to upload one you already created.
How to upload a world to a Minecraft: Bedrock Edition Realm
- Launch Minecraft and select Play.
- Select the Realms tab.
- Select the Realm you want to upload a world to and select Settings.
- Select either an empty world slot or a currently occupied slot to replace, then select Edit World.
- Navigate to the bottom of the Game Settings tab and select Upload World or Replace World depending on the available option.
- Select the world you want to upload onto the Realm.
There is a 4GB maximum world size for uploads. To upload a world from a different platform, see Use Realms to transfer a Minecraft: Bedrock Edition World to Another Device.