World size

World size is an option to change the size of the finite worlds in New Nintendo 3DS Edition and Legacy Console Edition (specific to Xbox One Edition, PlayStation 4 Edition, and Nintendo Switch Edition). By default, worlds generate at the largest size available in each edition.
==Legacy Console Edition==
In the finite worlds of Legacy Console Edition, the edge of the Overworld is surrounded by an endless sea of water preceded by an invisible barrier. The outer two chunks of the usable world is usually a smooth transition from the main landmass/noise generation to the sea of water. The edge of the Nether is surrounded by a wall of bedrock. The End is not affected by world size. Worlds are able to generate with any of the biomes and generated structures available in the current version. The tile on each edge of the Overworld and Nether is inaccessible, so the effective area is 2 tiles less on both axes.
After a world has been created, it can be expanded to a larger size. Larger worlds cannot be reverted to a smaller size. In this process, there is an option to "Overwrite World Edges", disabled by default. The description of this option reads: "When enabled, the outer 32 tiles around the world edge are overwritten by newly generated tiles to make the world size increase seamlessly. When disabled, the world size increase will leave all original tiles intact." Starting with a smaller world used to be beneficial, as one could choose to gradually expand when an update made changes to the world generation, and could therefore generate new chunks with new features. However, since updates were later discontinued on Legacy Console Edition, this benefit no longer exists.
Xbox 360 Edition, PlayStation 3 Edition, PlayStation Vita Edition, and Wii U Edition do not have the option for world size. All worlds generated in these editions are Classic size, although it is possible to expand them if they are transferred to an edition that supports larger world sizes. More villages, ocean monuments, and woodland mansions attempt to generate in Classic than in larger-sized worlds.
World size	Overworld area 	Number of maps 	Nether area 	Nether-Overworld ratio			
Classic 	864 × 864 blocks: 746,496 blocks54 × 54 chunks: 2,916 chunks 	1 × 1 map: 1 map 	288 × 288 blocks: 82,944 blocks 18 × 18 chunks: 324 chunks 	1:3 			
Small 	1024 × 1024 blocks: 1,048,576 blocks64 × 64 chunks: 4,096 chunks 	1 × 1 map: 1 map 	352 × 352 blocks: 123,904 blocks22 × 22 chunks: 484 chunks 	1:3 			
Medium 	3072 × 3072 blocks: 9,437,184 blocks192 × 192 chunks: 36,864 chunks 	3 × 3 maps: 9 maps 	512 × 512 blocks: 262,144 blocks 32 × 32 chunks: 1,024 chunks	1:6 			
Large 	5120 × 5120 blocks: 26,214,400 blocks 320 × 320 chunks: 102,400 chunks	5 × 5 maps: 25 maps	640 × 640 blocks: 409,600 blocks40 × 40 chunks: 1,600 chunks 	1:8 			
==New Nintendo 3DS Edition==
The finite worlds of the New Nintendo 3DS Edition are based on the Old world type from . The edges of both the Overworld and Nether are surrounded by an invisible barrier, and the ratio of the Nether to the Overworld is 1:3 regardless of world size. It is not possible to change the size of a world after it has been created.
World size	Overworld area 	Number of maps	Nether area
Small 	672 × 672 blocks: 451,584 blocks 42 × 42 chunks: 1,764 chunks 	Unknown 	224 × 224 blocks: 50,176 blocks 14 × 14 chunks: 196 chunks
Medium 	1344 × 1344 blocks: 1,806,336 blocks84 × 84 chunks: 7,056 chunks 	Unknown 	448 × 448 blocks: 200,704 blocks28 × 28 chunks: 784 chunks
Large 	2016 × 2016 blocks: 4,064,256 blocks126 × 126 chunks: 15,876 chunks	Unknown 	672 × 672 blocks: 451,584 blocks42 × 42 chunks: 1,764 chunks
==History==
==Gallery==
ClassicWorldConsole.png|Classic world type selected in the World Options menu in the Legacy Console Edition.
SmallWorldConsole.png|Small world type selected in the World Options menu in the Legacy Console Edition.
MediumWorldConsole.png|Medium world type selected in the World Options menu in the Legacy Console Edition.
ja:ワールドサイズ
pt:Tamanho do mundo
zh:世界大小