Probability 0.5, 3 attempts
87.5% chance of at least one success
COOKIE TOOLS · CALCULATORS
Independent Drop Probability Calculator
Calculate the chance of at least one success from a probability you supply. Compare independent attempts and find a target-probability attempt count.
FreeNo sign-upBrowser-basedVersion-independent model
Your result
Loading controls…How to use
- Enter the probability per independent attempt (0–1).
- Choose attempts and target probability; copy the mathematical result.
Examples
Probability 0.1, target 90%
22 attempts
Supported versions & limitations
This tool uses a mathematical or browser-format model; it does not depend on a game command codec.
- Assumes independent trials with identical probability; game mechanics and Looting are not inferred.
- A probability below 100% is never a guarantee.
Frequently asked questions
Does it read my world?
No. Calculations use only the values entered in this browser.
Can I export without an account?
Yes. Copy, download and share settings are free.
Sources
Facts reviewed 2026-10-12. Supported scope and preview limitations are described above.
Enjoy building? Try Cookie SMP.
Survival with friends. Bring your next idea to life.