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Pearl Index Calculator — Free Online Tool
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Pearl Index Calculator

Calculate contraceptive failure rates using the Pearl Index formula

Gynecology Guidelines: The Pearl Index represents the number of accidental pregnancies occurring in 100 woman-years of exposure. It is calculated as $(\text{Number of Pregnancies} \times 1,200) / \text{Total Exposure Months}$. Enter clinical trial or study data below.
Contraceptive Trial Parameters Input

Calculation Results

⚠️ Not medical advice. For reproductive health, clinical trials, and epidemiological reference only. Contraceptive efficacy assessment and family planning guidance must be evaluated strictly by qualified medical professionals.

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