AB Z-Test for Proportions Calculator

Determine if there's a significant difference between the conversion rates of two groups in your AB test.

Steps:
Input Data:
Visitors: Enter visitors for Group A and Group B.
Conversions: Enter conversions for Group A (CR_A) and Group B (CR_B).

Calculate:
Click "Submit" to see the results.

Results:
CR_A, CR_B: conversions of each group
P-Value: Probability the difference is due to chance (significant if < alpha)
Uplift: (CR_B - CR_A)/CR_A
Uplift CI: Confidence Interval of the uplift (significant if it excludes zero)

Example:
For two landing pages:
Group A: 1000 visitors, 200 conversions
Group B: 1200 visitors, 260 conversions
Enter these values to check for a significant difference.

Quick, accurate, and user-friendly! Analyze your AB tests now!