How is the chance of a perfect stat calculated?

For an inherited stat, the child takes one parent's value at random, so the perfect chance is the fraction of parents that have it perfect. For a randomised stat, a perfect roll has a 1 in 32 chance, the standard odds for hitting the maximum IV value.

What does the inherited-stats setting do?

It splits stats into inherited (passed from a parent) and randomised (rolled fresh). Items like a Destiny Knot raise the inherited count to five, dramatically improving the odds versus the default three.

Why is a 1 in 32 used for random stats?

IVs range from 0 to 31, so a freshly randomised stat lands on the maximum value 31 with probability 1 in 32. The tool uses this for any stat not guaranteed by inheritance.

How many eggs will I need for six perfect IVs?

It depends heavily on how many perfect parents you have. The expected attempts is 1 divided by the all-perfect probability, so improving your parents first cuts the egg count dramatically.

Does this model nature or hidden power?

No. It focuses on IV perfection across the six stats. Nature inheritance from an Everstone and Hidden Power typing are separate mechanics this calculator does not include.

World of Warcraft Breeding & IV Calculator

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Breeding for perfect stats is a probability problem, and the right item choices change the odds by orders of magnitude. This calculator combines both parents’ IVs and your inheritance setting to compute per-stat odds, the all-perfect chance, and the expected number of attempts.

How it works

Six stats are split into inherited (guaranteed passed from a parent) and the rest randomised. For an inherited stat the child takes one parent’s value, so:

P(perfect inherited) = (# parents perfect in that stat) / 2
P(perfect random)    = 1 / 32

The all-perfect chance is the product across all six stats, and expected attempts is its reciprocal:

P(all perfect) = Π P(stat perfect)
expected eggs  = 1 / P(all perfect)

Example and tips

With a Destiny Knot (five inherited stats) and both parents perfect in three shared stats, your odds climb quickly versus the default three inherited. Build toward six perfect parents one stat at a time: each newly perfected parent stat multiplies your odds and slashes the expected egg count. The randomised stat at 1 in 32 is usually the bottleneck — minimise how many stats stay random.