Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Probability
Binomial Probability Calculator
Find the probability of getting exactly k successes, at most k, or more than k in n independent trials. Ideal for quality control, genetics, and game-theory scenarios.
Fill in the required fields to see your result.
Probability
Poisson Probability Calculator
Find the probability that exactly k events occur in a fixed interval, given a known average rate λ. Use it for modeling rare events like customer arrivals, server requests, manufacturing defects, or radioactive decay counts.
Fill in the required fields to see your result.
Key differences
| Binomial Probability Calculator | Poisson Probability Calculator | |
|---|---|---|
| Category | Probability | Probability |
| Inputs required | 4 | 2 |
| Result | Probability | Probability |
| What it does | Find the probability of getting exactly k successes, at most k, or more than k in n independent trials. Ideal for quality control, genetics, and game-theory scenarios. | Find the probability that exactly k events occur in a fixed interval, given a known average rate λ. Use it for modeling rare events like customer arrivals, server requests, manufacturing defects, or radioactive decay counts. |