A/B-test Calculator
Confidence Interval
Calculate A/B-test Result
Frequentist calculator for A/B-tests. Includes the expected uplift range for a given probability.
A/B-Test Numbers
Control
Variant
Expected Uplift
probability that the variant outperforms control.
expected uplift (% chance to
exceed this range)
Observations
Observed Uplift:
SRM:
Confidence Intervals
Control: Variant:
Calculate probabiolity distribution for a binominal proportion
What could have been an observed ratio as well? Using the Clopper-Pearson Method
Input
Conversion Rate
The given confidence level means a % chance to exceed the expected bounds.
Why I built these calculators
When you search the internet for A/B-test calculators for Conversion Optimization, you can find enough of them. But, I always miss information or possibilities in all of them. That's why I decided to build my own calculators.
If you have any suggestions for improvement, please contact me :).