Minimum Baseline Conversion Rate: 7.89% Calculate MDE

Calculate sample size

Calculate control proportion

Minimum Detectable Effect (MDE):
%
The minimum relative change in conversion rate you would like to be able to detect. Given a 10% baseline conversion rate and a 20% MDE, the minimum conversion rate of the test group you would like to be able to detect is 10% * (1 + 20%), i.e. 12%.
Sample Size:

The number of all samples, including samples in both test and control group.
Control Proportion:
%
The proportion of the sample to include in the control group.
Significance Level:
%
The probability of the test rejecting the null hypothesis (H0) when it is true.
Statistical Power:
%
The probability of the test rejecting the null hypothesis (H0) when the alternative hypothesis (H1) is true.