🔬Interactive Tool
A/B Test Calculator
Plan your A/B test sample size and duration, or analyze results to check for statistical significance.
Test Parameters
Current conversion rate of your control
Relative improvement you want to detect (e.g., 20% means 5% → 6%)
Total daily visitors to the test page
Test Plan
Sample Size Per Variant
3,994
Total Sample Needed
7,988
Estimated Duration
8 days
(1.1 weeks)
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