A/B Testing Calculator

Use this calculator to determine if the result of an A/B test is statistically significant and make decisions with confidence. Great for measuring experiments on websites and ad campaigns such as those on Google and Facebook Ads.

Number of visitorsOverall conversionsConversion rate
A80%
B27%

Your test results

Test A converted 167% better than test B.

You can be 100% certain that the changes in test A will improve your conversion rates.

🎉 Your test is statistically significant!