AB+ Test Calculator by Scribbleminds

One test calculator to answer all your pre and post test analysis questions:

Test analysis

  • Does the test variant beat the original?
  • Does the test have the needed sample size?
  • Does the test have the needed duration?
  • What is the monetary ROI of the test variant?

Pre-test analysis

  • What is the minimal detectible effect I can test for?
  • How long should I test for considering the effect?
  • What’s the sample size for a test on this page?
  • Does confidence level affect my test duration?
Test Analysis