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Qalc AI
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A/B Test Calculator
All statistics tools
Determine if your test results are statistically significant.
Experiment Data
Control Group (A)
Visitors
Conversions
Variant Group (B)
Visitors
Conversions
Confidence Level
90%
95%
99%
Test Analysis
Result
Statistically Significant!
We are 95% confident that the difference is real.
Conversion Lift
+25.00%
Improvement
0.0496
Z = 1.96
About this calculator
Overview
A/B testing uses statistical hypothesis testing to compare two versions of a variable (like a web page) to determine which one performs better.
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Pro Tips
Ensure your sample size is large enough before concluding the test.
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Fun Facts
"Most A/B tests require thousands of visitors to reach statistical significance."
"A 95% confidence level means there is only a 5% chance the result happened by random chance."
