Mom & Baby

Calculators for pregnancy planning, baby development, and parenting — ovulation, due date, blood type, and more.

Blood Type Calculator

Predict your baby's possible blood type based on parents' blood types — ABO and Rh factor with probability percentages.

Mom & Baby
Child Height Predictor

Predict your child's adult height based on parents' heights — mid-parent method with range estimate.

Mom & Baby
Pregnancy Week Calculator

Calculate your current pregnancy week, trimester, and due date from your last menstrual period.

Mom & Baby
Fertility Window Calculator

Calculate your most fertile days, ovulation date, implantation window, and earliest pregnancy test date for conception planning.

Mom & Baby
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Mom & Baby Calculators

Plan pregnancy, track development, and make informed parenting decisions. Ovulation timing, due date estimation, blood type inheritance, and more — science-based tools for every stage of the journey from conception to early childhood.