Schematic To Litematic ((full))

With the release of Litematica for modern Minecraft versions, many players have moved away from the old Schematica and WorldEdit .schematic format in favor of the superior .litematic format. However, a lot of older builds and online repositories still use the .schematic file type.

Once you have loaded an old .schematic file into your world as a ghost image, you can permanently convert it to the new format: schematic to litematic

If you were asking how to do this rather than posting a guide, here is the short answer: With the release of Litematica for modern Minecraft