Free calculators and interactive tools from Experimento.
Free A/B test sample size calculator. Enter your baseline conversion rate and the smallest lift worth detecting to get the visitors per variation you need for a valid test.
Free A/B test significance calculator. Enter visitors and conversions for your control and variant to get the p-value, confidence level, and whether the result is statistically significant.
Free A/B test duration calculator. Enter your traffic, baseline conversion rate, and target lift to find out how many days your A/B test needs to run to reach significance.
Free CRO ROI calculator. Enter your traffic, conversion rate, and average order value to see the extra monthly and annual revenue a conversion rate improvement would generate.
Free minimum detectable effect (MDE) calculator. Enter the visitors per variation you can realistically get and your baseline conversion rate to find the smallest lift an A/B test can reliably detect.