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A/B test calculator

Enter visitors and conversions for a control and one or more variants to calculate rates, lift, confidence intervals, p-values, and approximate statistical significance.

Control A Visitors Conversions Control color

Variant B Variant B visitors Variant B conversions Variant B color

Decision readout

Analyse a test to see the leading arm, observed lift, p-values, and confidence notes.

Conversion-rate graph

Control vs variants

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