Card probability calculator
Define the deck, matching cards and draw size.
Number of matches
Exact hypergeometric probabilities.
Distribution
| Matches | Probability |
|---|---|
| Fill in the fields above — the result is computed on this page. | |
How to use this page
- Enter deck parameters.
- Read the distribution.
What this page does not do: Jokers and special deck rules must be included explicitly in N and K.
Further reading
The model samples without replacement and therefore does not treat successive cards as independent.
Frequently asked questions
Is this with replacement?
No, the hypergeometric model is without replacement.
See also
A/B test calculator
Compare two proportions in an A/B test. Calculate conversion rates, difference, uplift, z score, p value and c
A/B test planning — sample size, MDE and duration
Plan a two-proportion experiment, estimate detectable effect and traffic duration.
ACF and PACF autocorrelation calculator
Calculate ACF and PACF across time-series lags. Review the chart, reference bounds and coefficient table.