Pregnancy, Fertility & Child Growth Calculators

Date and percentile math for expectant parents, midwives and pediatric clinics, from conception timing through gestational weight gain and childhood growth tracking.

3 calculators in this category

Which one do you need?

Pregnancy Due Date Calculator
Work out your estimated due date and current gestational age from your last period, conception date or IVF transfer, with cycle-length adjustment.
Ovulation & Fertile Window Calculator
Predict your ovulation day and six-day fertile window from cycle length and luteal phase length, and project the dates for your next several cycles.
Child Growth Percentile Calculator
Convert a child's weight or height into an exact percentile and z-score using the LMS method behind the CDC and WHO growth charts, plus the reference curve.

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