Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Probability
Poisson Probability Calculator
Computes the probability of observing exactly k events in a fixed interval when events occur at a known average rate. Use it for call-centre arrivals, equipment failures, or any count of rare, independent events.
Fill in the required fields to see your result.
Probability
Dice Roll Probability Calculator
Compute the probability of rolling any target sum with any number of multi-sided dice. It counts the favorable combinations and divides by all equally likely outcomes, which is perfect for board-game and tabletop RPG design.
Fill in the required fields to see your result.
Key differences
| Poisson Probability Calculator | Dice Roll Probability Calculator | |
|---|---|---|
| Category | Probability | Probability |
| Inputs required | 3 | 3 |
| Result | Probability | Probability |
| What it does | Computes the probability of observing exactly k events in a fixed interval when events occur at a known average rate. Use it for call-centre arrivals, equipment failures, or any count of rare, independent events. | Compute the probability of rolling any target sum with any number of multi-sided dice. It counts the favorable combinations and divides by all equally likely outcomes, which is perfect for board-game and tabletop RPG design. |