A/B test, significance, and experimentation calculators. Browse our free testing tools below — all calculators are instant, accurate, and require no sign-up.
A/B Test Revenue Impact Calculator — Estimate the annualized revenue impact of an A/B test winner. Project how a conversion rate lift translates to additional dollars over time.
A/B Test Statistical Significance Calculator — Test whether your A/B test results are statistically significant. Enter visitors, conversions for control and variant to get the Z-score and p-value.
Bayesian A/B Test Calculator — Run a Bayesian A/B test analysis. Compute the probability that variant B beats control A using Beta posterior distributions and Monte Carlo simulation.
Confidence Interval Calculator — Calculate the confidence interval for a conversion rate or proportion. Support for 90%, 95%, and 99% confidence levels with sample size inputs.
Expected Loss Calculator — Calculate the expected loss of choosing a variant over the control in a Bayesian A/B test. Quantify the risk of making the wrong decision from test data.
Multivariate (MVT) Test Calculator — Calculate sample size and duration for multivariate tests. Enter number of combinations and daily traffic to plan MVT experiments effectively.
Uplift Calculator — Calculate the relative and absolute uplift between control and variant in an A/B test. See the percentage improvement and confidence in the measured lift.