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A/B Test Sample Size Calculator
Precisely map out your experiment thresholds
Weekly Total Traffic
Base CR (%)
Goal Uplift Magnitude
Rel %
Abs pp
⚠️ Goal target would exceed 100% conversion
Advanced & Grid Configuration
Confidence (α)
95% (Standard)
90%
99%
Power (1-β)
80% (Standard)
90%
95%
Weeks Start
Weeks Step
Traffic % Start
Traffic % Step
Statistically Significant
Insignificant