Gacha Calculator
This comprehensive suite of interactive calculators helps you understand gacha systems and general gacha mechanics analysis.
SSR
- Pity Peak: 90
- Pity Start: 75
- Bernuolli Probability: 50
Weapon
- Pity Peak: 80
- Pity Start: 65
- Bernuolli Probability: 75
SSR
- Pity Peak: 80
- Pity Start: 70
- Bernuolli Probability: 50
Weapon
- Pity Peak: 80
- Pity Start: 70
- Bernuolli Probability: 100
Cumulative Probability Chart
This chart shows how many attempts you need to reach specific probability thresholds for obtaining target copies.
Help
Suppose you intend to C6 a limited character from Genshin Impact, you will read the green line "Bernuolli + Pity adjust".
At default settings, it works out to ~1300 rolling attempts to have a 95% chance of maxing out your character.
Basic Parameters
Pity System
Bernoulli System
Chart Information
This chart shows the required amount of attempts to reach a cumulative probability of obtaining 1 target copies of a limited character you intend to pull. Each line represents a different gacha system configuration:
- Base: Standard gacha with 0.5% base rate
SSR Count Distribution
This histogram shows the distribution of expected counts of the SSR you want from a given number of attempts.