Although Minecraft's Java and Bedrock Editions are quite different, it's still possible to convert an existing Java world to Bedrock if you don't mind there being some differences to the world ...

To transfer a Minecraft world to another device without any complicated steps, go to the Minecraft version you are using and follow the mentioned steps. Java Edition Bedrock Edition Let us talk ...

However, it's also worth noting that players in Java Edition will have additional customization options for their flat world that Bedrock players won't have access to (by default).