Fisher's Exact Test Calculator
Calculate exact p-values for 2x2 contingency tables
Enter the counts for a 2x2 contingency table.
Outcome 1
Outcome 2
Group 1
Group 2
About Fisher's Exact Test
Fisher's exact test is used for small sample sizes in 2x2 contingency tables.
Unlike chi-square, it calculates exact p-values using the hypergeometric distribution.
It's preferred when expected cell counts are less than 5.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.