Free Testing Calculators

7 tools

A/B test, significance, and experimentation calculators. Browse our free testing tools below — no sign-up required.

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.

ecommercetesting

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.

ecommercetesting

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.

ecommercetesting

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.

ecommercetesting

Multivariate (MVT) Test Calculator

Calculate sample size and duration for multivariate tests. Enter number of combinations and daily traffic to plan MVT experiments effectively.

ecommercetesting

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.

ecommercetesting

More E-commerce Calculators