A/B Test Significance Calculator
Tests whether the conversion rates of two variants differ significantly using a pooled two-proportion z-test.
Read the full guide to this tool
Results
Explore the idea
Related tools
Chi-Square Test of Independence
Test association between two categorical variables from a contingency table.
One-Way ANOVA Calculator
Compare the means of three or more groups with an F-test.
P-value Calculator
Convert z, t, χ² or F statistics into p-values.
t-Test Calculator
One-sample, two-sample (pooled/Welch) and paired t-tests from raw data.
Chi-Square Goodness-of-Fit Test
Test whether observed counts match an expected distribution.
Fisher's Exact Test
Exact test for association in a 2×2 table — reliable for small counts.