A/B Test Calculator

Statistical significance calculator for A/B tests

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Calculate statistical significance of your A/B tests. Determine if your results are reliable or due to chance.

Test Data
Control (A)
Variant (B)
Sample Size Calculator

How many visitors do you need per variant?

Required per variant: —
Calculating...
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p-value
Control Rate
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Variant Rate
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Relative Uplift
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Z-Score
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Recommendation

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