A/B testing
Statistical power calculator
Estimate the minimum detectable effect (MDE) size based on a given sample size and power level. Perform a power analysis of an A/B test plan.
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Advanced power analysis calculator
Power analysis and MDE calculation done right!
- Works with binomial metrics such as conversion rates
- Power analysis for tests with multiple variants (A/B/N tests)
- Supports non-inferiority test designs
- Examine the full power function instead of just a single point
- Excellent documentation and presentation of calculation results
Take your A/B testing to the next level
Experience the power and utility of our A/B testing hub and all tools during our 30-day free trial. No credit card required.
Start free trialSee what our clients have to say
We've been using the sequential calculator with about 90% of our clients for many years now. The team have found it hugely beneficial to follow such a rigorous statistical protocol, and they appreciate how the UI simplifies explaining results to clients.
Sim Lenz
Director of Experimentation at Conversion.com
At Cro Metrics, we've run tens of thousands of experiments for leading brands. Analytics Toolkit and the AGILE test calculator represent a step above and beyond every one of the other tools we've used.
Ryan Lucht
Director of Strategy, Cro Metrics