Pity & Pull Calculator for Gacha planners
Pick a banner, enter your pity, guarantee and how many pulls (or how much currency) you have, and read the exact chance of getting the featured 5★ — and of the constellation or refinement you are aiming for. Per game: Genshin Impact · Honkai: Star Rail.
Reading the result
The big number is the probability that your pulls yield at least the target number of featured copies, given your current pity and guarantee. The bars show how many copies you are likely to end up with, and the certainty table tells you how many pulls you would need to be 50%, 75%, 90% or 99% sure, with the currency that corresponds to and how far short you are.
Banner constants, the exact state machine and sources are on the how it's calculated page.
FAQ
What is soft pity?
From pull 74 on character banners (66 on weapon banners) the 5★ chance rises by about 6–7 percentage points per pull, so almost everyone gets the 5★ between 74 and 85 even though hard pity is 90. The calculator uses the full curve, not just the hard pity.
How does the 50/50 work?
When a 5★ drops and you are not guaranteed, there is a 50% chance it is the featured character; if you lose, your next 5★ is guaranteed to be featured. Genshin adds Capturing Radiance: after two consecutive losses the next 5★ is featured for sure, which lifts the long-run rate to about 55%.
Is this a simulation?
No. The engine walks every pull through the exact state space (pity counter, guarantee, loss streak, copies obtained), so the result is the true probability to the decimal, and it is the same every time you load the link.
Which games are covered?
Genshin Impact (character and weapon event wishes) and Honkai: Star Rail (character and light cone event warps). Zenless Zone Zero and Wuthering Waves follow with their own curves.
Genshin Impact and Honkai: Star Rail are trademarks of HoYoverse (COGNOSPHERE). This site is an independent fan-made tool and is not affiliated with, endorsed by or sponsored by HoYoverse. Game names are used only to describe what the calculators are for. No game art, icons or logos are used. Formulas are compiled from public sources and may lag behind patches — each tool shows the game version it was checked against.