Unbreaking

Maximum level	III
Primary items
Secondary items
Enchantment weight	5
Overleveling behavior	Linear^[1]

Unbreaking is an enchantment that gives a chance for an item to avoid durability reduction when it is used, effectively increasing the item's durability.

Unbreaking Enchantment Tool Negative Binomial Graph — The probability of a tool breaking after a number of uses with different levels of this enchantment. Some lower durability materials may last longer than higher durability materials with some enchantment levels.

Obtaining[]

Unbreaking I, Unbreaking II, and Unbreaking III can be acquired using an enchanting table, by fishing, finding an enchanted book in dungeon chests, and by trading with a librarian villager.

Usage[]

For most items, there is a ${\frac {100}{level+1}}\%$ chance that using the item reduces durability. On average, tools last $level+1$ times as long.

Effective tool durability increase on average
		No enchanting	Unbreaking I	Unbreaking II	Unbreaking III
Average lifetime increase		+0%	+100%	+200%	+300%
Wood		60	120	180	240
Stone		132	264	396	528
Iron		251	502	753	1004
Gold		33	66	99	132
Diamond		1562	3124	4686	6248
Netherite		2032	4064	6096	8128
Fishing rod‌^{[Java Edition only]}		64	128	192	256
Bow‌^{[Bedrock Edition only]}		384	768	1152	1536
Crossbow	JE	326	652	978	1304
Crossbow	BE	464	928	1392	1856
Carrot on a stick		25	50	75	100
Flint and steel		64	128	192	256
Elytra	Durability	432	864	1296	1728
Elytra	Flight time	7 min 12 sec	14 min 24 sec	21 min 36 sec	28 min 48 sec
Shears		238	476	714	952
Shield		336	672	1008	1344

For armor, there is a $\left(60+{\frac {40}{level+1}}\right)\%$ chance a use reduces durability, meaning each durability hit against Unbreaking armor has a ~20%/27%/30% chance of being ignored. On average, armor lasts ${\frac {1}{0.6+{\frac {0.4}{level+1}}}}$ times as long.

When durability is reduced by multiple points, as when hooking a mob with fishing rods or getting blown up with TNT, Unbreaking is applied for each point of reduction.

Effective armor durability increase on average
		No enchanting	Unbreaking I	Unbreaking II	Unbreaking III
Chance of reducing durability		100% (¹⁄₁)	80% (⁴⁄₅)	73.3% (¹¹⁄₁₅)	70% (⁷⁄₁₀)
Average lifetime increase		+0% (⁰⁄₁)	+25% (¹⁄₄)	+36.4% (⁴⁄₁₁)	+42.9% (³⁄₇)
Turtle shell		275	344	375	393
Leather	Cap	55	69	75	79
	Tunic	80	100	109	114
	Pants	75	94	102	107
	Boots	65	81	89	93
Golden	Helmet	77	96	105	110
	Chestplate	112	140	153	160
	Leggings	105	131	143	150
	Boots	91	113	124	130

Data values[]

ID[]

Java Edition:

Name	Identifier	Translation key
Unbreaking	`unbreaking`	`enchantment.minecraft.unbreaking`

Bedrock Edition:

Name	Identifier	Numeric ID	Translation key
Unbreaking	`unbreaking`	`17`	`enchantment.durability`

History[]

Java Edition
1.0.0		Beta 1.9 Prerelease 3			Added Unbreaking.
1.4.6		12w50a			The player can now add the Unbreaking enchantment to anything that has durability.
1.7.2		13w36a			Armor can now receive unbreaking without the use of books.
Pocket Edition Alpha
v0.12.1		build 1			Added Unbreaking.
Legacy Console Edition
TU7	CU1	1.0	Patch 1	1.0.1	Added Unbreaking.

Issues[]

Issues relating to "Unbreaking" are maintained on the bug tracker. Report issues there.

References[]

↑ https://docs.google.com/spreadsheets/d/1Am8CRblXJ-RvhTszEJ_WovdmNaw2HKk3pbSvc5uQwYI/htmlview

Enchantments

[1] ttps://docs.google.com/spreadsheets/d/1Am8CRblXJ-RvhTszEJ_WovdmNaw2HKk3pbSvc5uQwYI/htmlview

[1]