Sample Size Calculator

This tool can be used to calculate sample size for many tests. Email Blast tests that tell you how successful one version of an email communication is versus another, Conversion Marketing tests that allow you to test different versions of your landing pages, A/B Ad Split Tests, to see differences in how your pay per click, affiliate, or other ads perform, and more.

Use the Cardinal Path sample size calculator in determining sample size. Calculate if your minimum sample size is large enough to show a statistical difference between variations in your next test with Cardinal Path’s free tool.

1

Enter the information about the test you'd like to run.

Expected Conversion Rate ?

% (Example: 10)

Improvement ?

1% Improvement 2% Improvement 5% Improvement 10% Improvement 20% Improvement 30% Improvement 50% Improvement

Time Estimation ?

Enter the number of unique visits to your test page or unique clicks on your test ad during a 24 hour period:

Optional

2

How sure do you want to be? ?

85% Confidence Level 90% Confidence Level 95% Confidence Level 98% Confidence Level

3

Run the calculations: