Does 1 Unbreaking II shovel last longer than 2 Unbreaking I shovels?

I have just enchanted 2 shovels, both at low levels. They are both Unbreaking I.
Would I get more uses if I combine them into 1 Unbreaking II? Or should I leave them as 2 Unbreaking I shovels?
The Wiki was not much help - I was looking for a value that I can just compare.
Best Answer
If you use one of shovels almost to breaking point, then combine (puting used one in second slot of anvil), you'll get to use 5 unenchanted shovels worth of durability, for same cost in levels as combining before using; you could also use ~12% of the shovel that goes into first slot, but then combining would be also repairing and would cost a bit more, but you'll get ~5.24 shovels worth.
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Does Unbreaking 1 last forever?
On average, lifetime is (Level+1) times as long. In other words, the actual durability on an item with the Unbreaking enchantment depends on chance and is no longer a fixed value.How much durability does an Unbreaking 3 Netherite shovel have?
DurabilityMaterialDurabilityIron250Diamond1561Golden32Netherite20312 more rowsIs Unbreaking 2 A max?
The maximum level for the Unbreaking enchantment is Level 3. This means that you can enchant an item with up to Unbreaking III.Is a Netherite shovel worth it?
While this upgrade will increase durability, the Netherite shovel does not perform any better than the diamond shovel. Having said that, this upgrade is still worth it as it increases the durability of the shovel by over 500.How to make an UNBREAKABLE PICKAXE | Minecraft Tinkers’ Construct Mod (1.12.2)
More answers regarding does 1 Unbreaking II shovel last longer than 2 Unbreaking I shovels?
Answer 2
The formulae for unbreaking is (100(level+1)) % chance for a use to use a durability.
So:
- an Unbreaking I shovel has a 50% chance that each use will not be free. (Lasts Twice as long)
- an Unbreaking II shovel has a 33% chance that each use will not be free. (Lasts Thrice as long)
Now this is all based of RNG so YMMV, but statistically speaking, each unbreaking I shovel (and you have TWO of them) is basically two shovels, and each unbreaking II shovel (and you WOULD have ONE of these) is basically 3 shovels.
2+2=4.
3=3.
Use two Unbreaking I.
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