A/B Test Statistical Significance Calculator
Version A Visitors:
Version A Conversions:
Version B Visitors:
Version B Conversions:
Test Type:
One-tailed (testing if B > A)
Two-tailed (testing if B ≠ A)
One-tailed: Use when you specifically want to test if B is better than A
Two-tailed: Use when testing for any difference (better or worse)
Calculate Statistical Significance