Poisson probability
ClientP(X=k) with rate λ from k and λ comma-separated.
About Poisson probability
P(X=k) with rate λ from k and λ comma-separated. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
Nearby workflows on Toolcore
- Binomial probability — P(X=k) for n trials, k successes, probability p. when units or numeric output should be checked on a related calculator.
- Normal CDF (approx) — Φ(z) approximation from z-score using erf. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
- Factorial calculator — Compute n! for non-negative integers. when units or numeric output should be checked on a related calculator.
Common use cases
- Poisson probability for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Binomial probability
ClientP(X=k) for n trials, k successes, probability p.
Normal CDF (approx)
ClientΦ(z) approximation from z-score using erf.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Factorial calculator
ClientCompute n! for non-negative integers.