Gacha Probability Calculator
Estimate your chance of pulling a featured item from the pull rate and number of pulls, including a hard-pity guarantee. Calculates in your browser.
Chance with pity
-
Show the math
Without pity, gacha odds follow the same rule as any random drop:
P(≥1) = 1 − (1 − rate)ᵖᵘˡˡˢ
If your planned pulls reach the hard-pity threshold, the item is guaranteed, so the with-pity chance becomes 100%.
Estimates only, real banners may use soft pity and rate-up rules. Please play responsibly. All math runs locally in your browser.
What this does
A gacha probability calculator estimates your chance of pulling a featured item from the pull rate and number of pulls, including a hard-pity guarantee.
How to use it
- Enter the pull rate.
- Enter your planned pulls.
- Set the hard-pity threshold.
- Read the with- and without-pity odds.
How it works
If your pulls reach hard pity the item is guaranteed. These are estimates — real banners may use soft pity this tool does not model. Please play responsibly.
P(at least one) = 1 − (1 − rate)^pulls
Understanding your result
Because pulls are independent, your odds build slowly and never reach certainty until hard pity guarantees the item, so do not assume a near miss means it is coming next. Real banners often add soft pity that this does not model, making true odds a little better near the cap. Spend within a budget you set in advance and please play responsibly.
Example
A 0.6% rate over 90 pulls is about a 42% chance before pity.
Sources & methodology
Last updated .
Frequently asked questions
What does the pity setting do?
If your planned pulls reach the hard-pity threshold, the item is guaranteed, so the with-pity chance becomes 100 percent.
Are these the exact banner odds?
They are estimates, real banners may use soft pity and rate-up rules this tool does not model.
Is my data kept?
No. Everything is computed locally in your browser. Please play responsibly.
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