Chance Calculator
category：probability
Table of contents
Simple Gacha Calculator（External link）
This page displays the graph of Cumulative Distribution Function, Probability Mass Function, and Item Count Distribution.
Chance Calculator
When loot box of 1% chance is performed 100 times, the chance to get one or more is
The chance to get m or more when loot box of p% chance is performed n times is
To get with n% chance, when the probability of hitting is p%, required trials are
Box Gacha
The chance to get one or more when a box gacha is performed n times
In this calculator it is assumed that all prizes will come out with equal probability.
The chance to get everything when box gacha is performed n times
In this calculator it is assumed that all prizes will come out with equal probability.
Kompu Gacha
Expected value of the number of times of trials necessary to hit everything when kompu gacha with n varieties
This is expected value, NOT PROBABILITY. The probability of hitting everything in expected value is about 64 %.
The chance to get everything when kompu gacha of n varieties is performed m times
Since the probability is calculated with expected value, when m is small(m < 20), precision is low.