A/B Test Statistical Significance Calculator

Calculate the certainty of your A/B test result.

Whether you are testing email subject line open rates, landing page variations to improve conversion, or any other marketing experiments, make sure your test results are statistically significant before you push them to production.

The sample size eg. visitors on a page:

The number of successes eg. conversions:

Success rate

0% certainty. Your A/B test is not statistically significant.