Freshmarketer Resources

Calculator Icon A/B Testing Calculators

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Sample Size Calculator

Allows you to calculate the amount of visitors needed to achieve your requirement.

Duration Calculator

Allows you to calculate maximum duration (days) for which the test should be run, for the specified sample size to arrive at a proper conclusion.

Significance Calculator

Find if your test results are statistically significant.

Baseline conversion rate

Existing conversion rate of the site that you wish to A/B test.

Minimum Detectable Effect (MDE)

MDE measures the minimum change to the baseline conversion rate that you wish to detect.

Number of variations (control included)

Total number of variations that you wish to include in your A/B test.

Average number of daily visitors

Percentage of Visitors included in test?

Statistical significance

95% is the de facto standard for Statistical significance. You can alter the value at your own discretion. The ideal range is 80-99.