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Chunk

Visualization of the ground portion of a single chunk. The entire chunk extends up to a height of 256.

A chunk is a 256 block tall 16×16 segment of a Minecraft world. Chunks are the method used by the world generator to divide maps into manageable pieces.

Generation

Chunks are 16 blocks wide, 16 blocks long, and 256 blocks high, which is 65,536 blocks total. Chunks are generated around players when they first enter the world. As they wander around the world, new chunks are generated as needed.

Chunks are generated with the help of the map seed, which means that the chunks are always the same if you would use the same seed again, as long as the map generator and version number remain the same.

Minecraft's chunk area is (each block is exactly 1 meter long):

  • 16000000 square millimeters
  • 160000 square centimeters
  • 16 square meters
  • 0.000016 square kilometers
  • 24800.0496 square inches
  • 172.2226 square feet
  • 19.1358 square yards
  • 0.004 acres

Loaded and unloaded chunks

Chunks near the player are loaded into memory. The range depends on the Render Distance setting. These chunks may have activity (mobs spawning, trees growing, water flowing, dropped items disappearing etc.), while chunks outside of the range are inactive, and are stored on the disk. Once stored, a chunk is not stored again for at least 30 seconds.

In multiplayer mode, a grid with a default inradius of 10 (for a total of 21×21 or 441) chunks is loaded around each player and sent to the player by default, although this can be configured to be between 3 and 15, usually lowered with a poor connection home server.

Spawn chunks

Main article: Spawn chunk
Information icon
This feature is exclusive to Java Edition. 

The chunks in the area immediately surrounding the world spawn point are special chunks that are never unloaded from memory as long as at least one player is in the Overworld. This means that things like redstone mechanisms and mob farms continue to operate even when all players are far away.

Effects on performance

Chunks are normally loaded into volatile memory only when they are needed for displaying. This 'store until needed' memory management is commonly used in games with procedurally-generated terrain so that the players' computers don't have to track and update hundreds of plants and mobs simultaneously.

Minecraft's render engine uses OpenGL's display list feature to divide a world chunk into sixteen 16×16×16 blocks large display lists to speed up rendering significantly. They need to be rebuilt each time when a block within them is changed and can be rendered multiple times to achieve e. g. transparency.[1]

Slime spawning

Main article: Slime § Spawning

Slimes can spawn only in specific chunks, determined by a calculation performed on the chunk coordinates. There are a number of utilities and mods that allow the player to identify the chunks they can spawn in.

Finding chunk edges

Chunkf32

The key F3 + G can be used to display chunk boundaries.

Alternately, pressing the "F3" button opens the Debug screen that shows the player's X, Y, and Z coordinates, in addition to the "c" variable. These coordinates change as the player moves around. The player can know the chunk they are in by the variable "c" that is next to both "x" and "z" variables. The number in the brackets specifies how far the player is from the north-western corner of the chunk, so if the "c" beside X was 3(5), and the "c" beside Z was 2(4), then the player is on chunk (3, 2), and is on block (5, 4) from the north-western corner.

X and Z coordinates that are divisible by 16 represent the boundaries between chunks. EG: (96, -32) is a corner where four chunks meet. One of those chunks is between X coordinates 80 to 96 and Z coordinates -48 to -32. Another one is between X coordinates 96 to 112 and Z coordinates -32 to -16, and so on. When either X or Z crosses a multiple of 16, the player is moving across chunks.

Essentially, the player is in the top-left corner (north-western) of a chunk when both x and z coordinates are divisible by 16.

Additionally, the player can know the chunk they are on by this formula:
The X of chunk is Floor( X coordinate / 16 )
The Z of chunk is Floor( Z coordinate / 16 )
Where Floor is the largest previous integer. E.g. Floor( 27.9561 ) is 27
In other words if X was 27, Z was -15 the chunk is chunk ( Floor( 27 / 16 ), Floor( -15 / 16 ) ), meaning that the player is on chunk (1, -1)
Also, The player can know how far he is from the north-western corner by this formula:
(X or Z coordinate) AND 15

In Bedrock Edition, when toggling fancy graphics, the world renders again, loading only the chunk the player is in for a split second, briefly showing the chunk boundaries. When the player changes the render distance rapidly, chunk barriers appear as a blue line.

Video

History

Dark Oak Sapling
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You can help by expanding it.
Instructions: 8
pre-classic
Cave game tech testThe precursors to chunks are showcased.
infdev
20100227
{{Extension DPL}}<ul><li>[[Iron Nugget|Iron Nugget]]<br/>{{About|the nugget|the ore|Iron Ore|the item|Iron Ingot|the mineral block|Block of Iron}}
{{Item
| image = Iron Nugget.png
| renewable = Yes
| stackable = Yes (64)
}}
'''Iron nuggets''' are pieces of iron that can be obtained by [[smelting]] iron [[tools]]/[[Sword|weapons]] or iron/chainmail [[armor]]. One iron nugget is worth one-ninth of an [[iron ingot]].

== Obtaining ==

=== Crafting ===

{{Crafting
|Iron Ingot
|Output= Iron Nugget,9
|type=Material
}}

=== Smelting ===

{{Smelting
|Iron Sword; {Any iron tools}; {Any iron armor}; {Any chainmail armor}; Iron Horse Armor
|Iron Nugget
|0,1
}}
[[Item durability|Durability]] and [[enchantments]] do not affect the ability to smelt iron tools, weapons, or armor into iron nuggets.

=== Bartering ===
[[Piglins]] may [[barter]] 9–36 iron nuggets when given a [[gold ingot]].

=== Chest loot ===

{{LootChestItem|iron-nugget}}

== Usage ==

Iron nuggets are used to craft [[iron ingot]]s, [[lantern]]s, [[soul lantern]]s, and [[chain]]s.

=== Crafting ingredient ===

{{crafting usage}}

== Data values ==
=== ID ===
{{edition|java}}:
{{ID table
|edition=java
|showforms=y
|generatetranslationkeys=y
|displayname=Iron Nugget
|spritetype=item
|nameid=iron_nugget
|form=item
|foot=1}}

{{edition|bedrock}}:
{{ID table
|edition=bedrock
|shownumericids=y
|showforms=y
|notshowbeitemforms=y
|generatetranslationkeys=y
|displayname=Iron Nugget
|spritetype=item
|nameid=iron_nugget
|id=569
|form=item
|foot=1}}

== History ==

{{History|java}}
{{History||1.11.1|snap=16w50a|[[File:Iron Nugget JE1 BE1.png|32px]] Added iron nuggets. 
|Iron nuggets can be used to craft [[iron ingot]]s.
|Iron nuggets are obtained from [[smelting]] iron [[tool]]s and [[armor]].}}
{{History||1.13|snap=17w47a|Prior to [[1.13/Flattening|''The Flattening'']], this item's numeral ID was 452.}}
{{History|||snap=18w11a|Iron nuggets now generate in [[shipwreck]] [[chest]]s.}}
{{History||1.14|snap=18w46a|Iron nuggets are now used to craft [[lantern]]s.}}
{{History|||snap=18w50a|Iron nuggets can now be found in chests in [[taiga]] [[village]] houses.}}
{{History||1.16|snap=20w06a|Iron nuggets are now used to craft [[soul fire lantern]]s.}}
{{History|||snap=20w10a|Iron nuggets now have a {{frac|10|411}} (~2.43%) chance of being given by [[piglin]]s when [[bartering]], in a stack size of 9–36.}}
{{History|||snap=20w16a|Iron nuggets are now used to craft [[chain]]s.|Iron nuggets now generate in [[ruined portal]] and [[bastion remnant]] [[chest]]s.}}

{{History|pocket}}
{{History||1.1.0|snap=alpha 1.1.0.0|[[File:Iron Nugget JE1 BE1.png|32px]] Added iron nuggets.
|Iron nuggets can be used to craft [[iron ingot]]s.
|Iron nuggets are obtained from [[smelting]] iron [[tool]]s and [[armor]].}}
{{History|bedrock}}
{{History||1.4.0|snap=beta 1.2.20.1|Iron nuggets can now be found in some [[shipwreck]] [[chest]]s.}}
{{History||1.10.0|snap=beta 1.10.0.3|Iron nuggets are now used to craft [[lantern]]s.}}
{{History||1.11.0|snap=beta 1.11.0.1|Iron nugget can now be found in [[taiga]] [[village]] house chests.}}
{{History||1.16.0|snap=beta 1.16.0.51|Iron nuggets are now used to craft [[soul fire lantern]]s.}}
{{History|||snap=beta 1.16.0.57|Iron nuggets now have a {{frac|10|411}} (~2.43%) chance of being given by [[piglin]]s when [[bartering]], in a stack size of 9–36.
|Iron nuggets now generate in [[ruined portal]] and [[bastion remnant]] [[chest]]s.}}
{{History|||snap=beta 1.16.0.59|Iron nuggets are now used to craft [[chain]]s.}}
{{History||1.16.100|snap=beta 1.16.100.50|Iron nuggets can now be used as fuel in a [[furnace]].<ref>{{bug|MCPE-114216}}</ref>}}
{{History||1.18.30|snap=beta 1.18.30.26|Iron nuggets can no longer be used as fuel in a furnace.}}

{{History|console}}
{{History||xbox=TU53|xbone=CU43|ps=1.49|wiiu=Patch 23|switch=1.0.3|[[File:Iron Nugget JE1 BE1.png|32px]] Added iron nuggets. 
|Iron nuggets can be used to craft [[iron ingot]]s.
|Iron nuggets are obtained from [[smelting]] iron [[tool]]s and [[armor]].}}
{{History||xbox=none|xbone=none|ps=1.90|wiiu=none|switch=none|Iron nuggets are now used to craft [[lantern]]s}}

{{History|new 3ds}}
{{History||1.9.19|[[File:Iron Nugget JE1 BE1.png|32px]] Added iron nuggets.
|Iron nuggets can be used to craft [[iron ingot]]s.
|Iron nuggets are obtained from [[smelting]] iron [[tool]]s and [[armor]].}}
{{History|foot}}

== Issues ==
{{issue list}}

==Gallery==
<gallery>
Pocket Edition Iron Nugget.jpg|First image of an iron nugget in ''Bedrock Edition''.
</gallery>

== See also ==
*[[Gold Nugget]]
*[[Iron]]

== References ==
{{Reflist}}

{{Items}}

[[de:Eisenklumpen]]
[[fr:Pépite de fer]]
[[ja:鉄塊]]
[[ko:철 조각]]
[[nl:IJzerklompje]]
[[pl:Bryłka żelaza]]
[[pt:Pepita de ferro]]
[[ru:Кусочек железа]]
[[uk:Залізний самородок]]
[[zh:铁粒]]
[[Category:Renewable resources]]</li><li>[[:Category:Education Edition items|Category:Education Edition items]]<br/>[[Category:Education Edition]]
[[Category:Items]]</li></ul>
Map height is not custom anymore. The chunk height has now been changed to 128.
Java Edition
1.2.1
{{Extension DPL}}<ul><li>[[Book|Book]]<br/>{{For}}
{{Item
| image = Book.png
| renewable = Yes
| stackable = Yes (64)
}}

'''Books''' are items used in [[enchanting]] and [[crafting]].

== Obtaining ==

=== Block loot ===

Three books are dropped when a [[bookshelf]] is mined without [[Silk Touch]] or destroyed by an [[explosion]].

=== Crafting ===
{{crafting
|Paper
|Paper
|Paper
|Leather
|Output= Book
|type= Miscellaneous
}}

=== Chest loot ===

{{LootChestItem|book}}

=== Grindstones ===

Disenchanting an [[enchanted book]] at a [[grindstone]] yields a normal book and a small amount of experience.

=== Villager gifts ===

{{in|java}}, librarian [[villagers]] throw books at players under the [[Hero of the Village]] effect.

== Usage ==

=== Crafting ingredient ===
{{crafting usage}}

=== Chiseled bookshelf ===
{{control|Use|text=Using}} the [[chiseled bookshelf]] while having a book in the main hand will put the book inside the chiseled bookshelf.

=== Enchanting ===
Books can be made into [[enchanted book]]s by enchanting them on [[enchanting table]]s.

=== Trading ===

Librarian [[villager]]s can buy a single book as part of an [[enchanted book]] trade.

Apprentice-level Librarian villagers have a {{frac|2|3}} chance to buy 4 books for an [[emerald]] {{in|java}}, and always offer the trade {{in|bedrock}}.

== Achievements ==
{{load achievements|Librarian;Enchanter}}


== Advancements ==
{{load advancements|Enchanter;The Power of Books}}

== Sounds ==
{{edition|java}}:
{{Sound table
|sound=Chiseled bookshelf insert1.ogg
|sound2=Chiseled bookshelf insert2.ogg
|sound3=Chiseled bookshelf insert3.ogg
|sound4=Chiseled bookshelf insert4.ogg
|subtitle=Book placed
|source=block
|description=When a book is placed in a chiseled bookshelf
|id=block.chiseled_bookshelf.insert
|translationkey=subtitles.chiseled_bookshelf.insert
|volume=0.8
|pitch=''varies'' <ref group=sound>Can be 1.0, 0.85, or 1.1 for each sound</ref>
|distance=16}}
{{Sound table
|sound=Chiseled bookshelf pickup1.ogg
|sound2=Chiseled bookshelf pickup2.ogg
|sound3=Chiseled bookshelf pickup3.ogg
|subtitle=Book taken
|source=block
|description=When a book is removed from a chiseled bookshelf
|id=block.chiseled_bookshelf.pickup
|translationkey=subtitles.chiseled_bookshelf.take
|volume=0.8
|pitch=''varies'' <ref group=sound>Can be 1.0, 0.8, or 1.1 for each sound</ref>
|distance=16
|foot=1}}

{{edition|bedrock}}:
{{Sound table
|type=bedrock
|sound=Chiseled bookshelf insert1.ogg
|sound2=Chiseled bookshelf insert2.ogg
|sound3=Chiseled bookshelf insert3.ogg
|sound4=Chiseled bookshelf insert4.ogg
|source=block
|description=When a book is placed in a chiseled bookshelf
|id=insert.chiseled_bookshelf
|volume=0.8
|pitch=''varies'' <ref group=sound name=insertvaries>Can be 1.0, 0.85, or 1.1 for each sound</ref>}}
{{Sound table
|sound=Chiseled bookshelf pickup1.ogg
|sound2=Chiseled bookshelf pickup2.ogg
|sound3=Chiseled bookshelf pickup3.ogg
|source=block
|description=When a book is removed from a chiseled bookshelf
|id=pickup.chiseled_bookshelf
|volume=0.8
|pitch=''varies'' <ref group=sound name=pickupvaries>Can be 1.0, 0.8, or 1.1 for each sound</ref>
|foot=1}}

== Data values ==
=== ID ===
{{edition|java}}:
{{ID table
|edition=java
|showforms=y
|generatetranslationkeys=y
|displayname=Book
|spritetype=item
|nameid=book
|form=item
|foot=1}}

{{edition|bedrock}}:
{{ID table
|edition=bedrock
|showitemtags=y
|shownumericids=y
|showforms=y
|notshowbeitemforms=y
|generatetranslationkeys=y
|displayname=Book
|spritetype=item
|nameid=book
|id=387
|itemtags=minecraft:bookshelf_books</code>
|form=item
|foot=1}}

== Video ==

<div style="text-align:center">{{yt|UGJBUhxwKy0}}</div>

== History ==

{{History|java alpha}}
{{History||v1.0.11|[[File:Book JE1 BE1.png|32px]] Added books.
|The only use of books is crafting [[bookshelves]], which are only used as a purely decorative [[block]] until [[Beta 1.9 Prerelease 3]].}}
{{History|java beta}}
{{History||1.8|snap=Pre-release|Books are now found in the new [[stronghold]] library [[chest]]s.}}
{{History|java}}
{{History||1.0.0|snap=Beta 1.9 Prerelease 3|Books are now used to craft [[enchantment table]]s, gaining their first functional usage outside of decoration.}}
{{History||1.3.1|snap=12w17a|The crafting recipe is now shapeless, so books can now be crafted in the player's 2×2 [[crafting]] area, although the recipe now requires [[leather]]. Before this version, books were crafted with three [[paper]] sheets in a single column.
|A book can now be crafted into a [[book and quill]], which can be used to create [[written book]]s.}}
{{History|||snap=12w21a|Librarian [[villager]]s now [[trading|buy]] 11–12 books for 1 [[emerald]].}}
{{History|||snap=12w22a|Librarian villagers now [[trading|sell]] [[enchanted book]]s for 5–64 emeralds and 1 book.}}
{{History||1.4.6|snap=12w49a|Books can now be enchanted into [[enchanted book]]s, and then combined together in an [[anvil]] with a [[tool]] to then enchant it.}}
{{History||1.8|snap=14w02a|Librarian villagers now buy 8–10 books for 1 [[emerald]].}}
{{History||1.9|snap=15w43a|Average yield of books in [[stronghold]] library chests has been substantially increased.}}
{{History||1.12|snap=17w13a|Added the [[knowledge book]], a green-colored book that grants the [[player]] a recipe for [[crafting]].
|The recipe tab on the [[crafting table]] GUI uses a red-colored book.}}
{{History||1.13|snap=17w47a|Prior to [[1.13/Flattening|''The Flattening'']], this [[item]]'s numeral ID was 340.}}
{{History|||snap=18w11a|Books now generate in [[shipwreck]] chests.}}
{{History||1.14|snap=18w43a|[[File:Book JE2 BE2.png|32px]] The texture of books has been changed.}}
{{History|||snap=18w48a|Books can now be obtain by disenchanting non-curse [[enchanted book]]s in a grindstone.|Books can now be found in chests in [[plains]] [[village]] houses.}}
{{History|||snap=18w50a|Books can now be found in chests in [[desert]] village houses.}}
{{History|||snap=19w13a|Librarian villagers now give books to players under the [[Hero of the Village]] effect.}}
{{History||1.19|snap=Deep Dark Experimental Snapshot 1|Books now generate in [[ancient city]] chests.}}
{{History||1.20<br>(Experimental)|link=1.19.3|snap=22w42a|Books can now interact with [[chiseled bookshelves]].}}

{{History|pocket alpha}}
{{History||v0.2.0|[[File:Book JE1 BE1.png|32px]] Added books. They are currently unobtainable and serve no purpose.}}
{{History||v0.3.0|Books can be used to craft [[bookshelves]].}}
{{History||v0.5.0|Books can now be obtained after activating the [[nether reactor]].}}
{{History||v0.12.1|snap=build 1|The crafting recipe for books now requires [[leather]]. Before this version, books were crafted with three [[paper]] sheets in a single column.
|Books are now used to craft [[enchanting table]]s.
|Books can now be enchanted into [[enchanted book]]s, and then combined together in an [[anvil]] with a [[tool]] to then enchant it.
|Books are no longer available from the [[nether reactor]].}}
{{History|pocket}}
{{History||1.0.4|snap=alpha 1.0.4.0|Librarian villagers now [[trading|buy]] 8–10 books for 1 [[emerald]].}}
{{History|bedrock}}
{{History||1.2.0|snap=beta 1.2.0.2|A book can now be crafted into a [[book and quill]], which can be used to create [[written book]]s.}}
{{History||1.4.0|snap=beta 1.2.14.2|Books can now be found inside of the map room [[chest]] in [[shipwreck]]s.}}
{{History||1.10.0|snap=beta 1.10.0.3|Books can now be found in [[plains]] [[village]] chests.
|[[File:Book JE2 BE2.png|32px]] The texture of books has been changed.}}
{{History||1.11.0|snap=beta 1.11.0.4|Librarian [[villager]]s now [[trading|buy]] 4 books for an [[emerald]].}}
{{History||Wild Update<br>(Experimental)|link=Bedrock Edition 1.18.30|snap=beta 1.18.30.32|Books now generate in [[ancient city]] chests.}}
{{History||1.20<br>(Experimental)|link=Bedrock Edition 1.19.50|snap=beta 1.19.50.21|Books can now interact with [[chiseled bookshelves]].}}

{{History|console}}
{{History||xbox=TU1|xbone=CU1|ps=1.0|wiiu=Patch 1|[[File:Book JE1 BE1.png|32px]] Added books.}}
{{History||xbox=TU14|ps=1.04|The crafting recipe for books now requires [[leather]]. Before this version, books were crafted with three [[paper]] sheets in a single column.}}
{{History|PS4}}
{{History||1.90|[[File:Book JE2 BE2.png|32px]] The texture of books has now been changed.}}

{{History|New 3DS}}
{{History||0.1.0|[[File:Book JE1 BE1.png|32px]] Added books.}}
{{History|foot}}

== Issues ==

{{issue list}}

== See also ==

* [[Enchanted Book]]
* [[Knowledge Book]]

{{Items}}

[[Category:Renewable resources]]

[[cs:Kniha]]
[[de:Buch]]
[[es:Libro]]
[[fr:Livre]]
[[hu:Könyv]]
[[it:Libro]]
[[ja:本]]
[[ko:책]]
[[nl:Boek]]
[[pl:Książka]]
[[pt:Livro]]
[[ru:Книга]]
[[th:หนังสือ]]
[[uk:Книга]] 
[[zh:书]]</li><li>[[Smarter Watch|Smarter Watch]]<br/>{{Joke feature}}{{Exclusive|Java}}{{Item
| title = Smarter Watch
| image = Smarter Watch.png
| renewable = No
| stackable = Yes (64)
}}

The '''Smarter Watch''' was a joke offhand [[item]].

== Usage ==
Smarter watches were "equipped" by having them placed into the offhand slot. Upon equipping, they would display the current time above the hotbar, in minutes and seconds, with one minute of in-game time being 5/6 of a real-time second, and one in-game hour being 5/6 of a real-time minute or 50 seconds.

The smarter watch would also notify the [[player]] of statistics milestones, alongside taken [[damage]], [[item]] specific info, [[crafting]] items and more.{{info needed|What exactly?}}

== Sounds ==
{{Sound table
|sound=Tick1.ogg
|sound2=Tick2.ogg
|subtitle=''None''
|source=player
|description=When a notification is displayed
|id=item.smarter_watch.notice
|translationkey=''None''
|volume=1.0
|pitch=1.0
|distance=16
|foot=1}}

== Data values ==
=== ID ===
{{ID table
|edition=java
|shownumericids=y
|showforms=y
|generatetranslationkeys=y
|displayname=Smarter Watch
|spritetype=item
|nameid=smarter_watch
|id=502
|form=item
|translationkey=item.smarterWatch.name
|foot=1}}

== History ==
{{History|java}}
{{History||1.RV|snap=1.RV-Pre1|[[File:Smarter_Watch_(item).png|32px]] [[File:Smarter Watch.png|32px]] Added the smarter watch.}}
{{History|foot}}

== Issues ==
Smarter Watches are an unsupported [[item]] due to being an [[Wikipedia:April Fools' Day|April Fools']] joke, and therefore issues relating to them will not be fixed.

== Gallery ==

<gallery>
TechGear.png|A [[player]] wearing the smarter watch, featured in this [[wikipedia:April Fools' Day|April Fools']] joke version.
</gallery>

{{Items}}
{{Jokes}}

[[Category:Non-renewable resources]]
[[Category:Joke items]]

[[pt:Relógio inteligente]]</li></ul>
The chunk height has now been increased to 256.

Trivia

  • There are a possible fourteen trillion (14,062,500,000,000) real chunks that can be generated. There are 7.46×10244,700 possible chunks, excluding entities.
  • If a player stands in a chunk that has not generated yet, the world immediately becomes invisible until they are in a valid chunk. This does not happen if the Y coordinates are beyond the chunk boundaries.
  • In Bedrock Edition, if one of the sixteen 16×16×16 sections of a chunk doesn't have any blocks in it, placing a block there shows the same animation as a chunk loading. This bug makes the block that the player placed turn to the same color of the sky in the direction the player is facing for about 1 second and starts fading away into the normal block texture. If the time is sunrise or sunset and the player places a block there, it actually changes colors constantly for 1 second if the player keeps bobbing their head up and down. The block also makes blocks behind it appear invisible.
  • Placing or destroying a block in an unloaded chunk usually reloads it.

See also

References

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