Pregnancy & Fertility Calculators

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Pregnancy

Estimate your baby’s due date from your last menstrual period, conception, or ultrasound.

Find out how many weeks pregnant you are and which trimester you are in.

Calculate gestational age in weeks and days from the last menstrual period or ultrasound.

Track recommended pregnancy weight gain by week based on your pre-pregnancy BMI.

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Predict your most fertile days and ovulation date from your menstrual cycle.

Estimate the likely date of conception from a due date or last menstrual period.

Predict your next periods and cycle dates from your average cycle length.

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The professional-grade scientific calculator with 417 functions, natural display, and solar power. Perfect for students and professionals.