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.

Exposed, with outcome (a)

Exposed, no outcome (b)

Unexposed, with outcome (c)

Unexposed, no outcome (d)

Probability

Confidence Interval Calculator

Computes the range of values likely to contain a true population mean at your chosen confidence level. Use it when reporting survey results, clinical trial outcomes, or any estimate derived from a sample.

Sample Mean

Sample Standard Deviation

Sample Size (n) (observations)

Confidence Level

Distribution Type

Key differences

	Odds Ratio Calculator	Confidence Interval Calculator
Category	Statistics	Probability
Inputs required	4	5
Result	Odds Ratio	Margin of Error (±)
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.	Computes the range of values likely to contain a true population mean at your chosen confidence level. Use it when reporting survey results, clinical trial outcomes, or any estimate derived from a sample.