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RNG Luck

OSRS RNG Luck Calculator

1/128 · 0 KC

0

Drop

Drop rate (1 / N)Kill countUniques received

Independent Bernoulli trials with p = 1/N. Same engine as the dry and drop-rate calculators. Do not use this for pity systems or raid unique tables that are not independent.

P(at least 1)

0.00%

Expected drops

0.000

Dry percentile

1.0

P(exactly 1) = 0.00%. P(1+ ) = 0.00%. KC for 50% / 90% / 99%: 89 / 294 / 588.

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How it works

Enter a 1/N rate and kill count, or pick a modelled boss unique. The math is the existing binomial engine.

Important mechanics

Dry percentile is P(X ≤ obtained) under that model. It is not a personality score.

Frequently asked

Can I use this for ToA uniques?

Not as a 1/N unique. Use the raid calculator for ToA / CoX / ToB.

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