Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Odds Ratio Calculator
Compute the odds ratio from a 2×2 contingency table to measure the association between an exposure and an outcome. Widely used in epidemiology and case-control studies.
P-Value Calculator
Convert a z-score (or any standard-normal test statistic) into a p-value for a one- or two-tailed hypothesis test, then see it visualised as the shaded tail area on the standard normal curve. The smaller the p-value, the stronger the evidence against the null hypothesis — reject H₀ when p drops below your significance threshold (commonly 0.05).
Red shaded area is the rejection region — the probability mass in the tail(s) at least as extreme as your test statistic. A significant result means this red area is smaller than your significance level α.
Key differences
| Odds Ratio Calculator | P-Value Calculator | |
|---|---|---|
| Category | Statistics | Statistics |
| Inputs required | 4 | 2 |
| Result | Odds Ratio | p-value |
| What it does | Compute the odds ratio from a 2×2 contingency table to measure the association between an exposure and an outcome. Widely used in epidemiology and case-control studies. | Convert a z-score (or any standard-normal test statistic) into a p-value for a one- or two-tailed hypothesis test, then see it visualised as the shaded tail area on the standard normal curve. The smaller the p-value, the stronger the evidence against the null hypothesis — reject H₀ when p drops below your significance threshold (commonly 0.05). |