A/B Test Calculator

A/B visitors · conversions → z-score · p-value · significance + baseline conversion rate · MDE → required sample size per group

Visitors A

Conversions A

Visitors B

Conversions B

Results

Conversion Rate A

5.00%

Conversion Rate B

6.50%

Relative Uplift

+30.00%

Z-Score

1.4408

P-Value (two-tailed)

0.1496

Significance (95%)

Not significant ✗

Based on normal approximation (two-tailed z-test, α=0.05). Results are estimates only.

Verify outputs before using in production. No warranty — see Terms.