30+ Free Tools
Genetics, pregnancy, fertility, and baby development tools - completely free, no account required.
Genetic Predictors
Eye Color Predictor
Predict baby's eye color using the two-gene inheritance model. Input parent and grandparent eye colors for accurate probability calculations.
Hair Color Predictor
Calculate probable hair color outcomes based on melanin genetics and family inheritance patterns.
Hair Type Predictor
Predict curly, wavy, or straight hair using dominant/recessive gene analysis.
Blood Type Calculator
Determine possible blood types using ABO and Rh factor inheritance rules.
Height Estimator
Calculate predicted height range using mid-parental formula and genetic variance.
Pregnancy Health
Due Date Calculator
Calculate your estimated due date based on last period or conception date.
Pregnancy Weight Gain Calculator
Personalized weight gain recommendations based on your BMI and pregnancy stage.
BMI Calculator
Calculate your pre-pregnancy Body Mass Index.
Caffeine Limit Tracker
Track daily caffeine intake and stay within safe limits.
Iron Requirement Calculator
Calculate your iron needs during pregnancy.
Fertility & Conception
Ovulation Calculator
Predict your most fertile days.
Fertility Window Tracker
Identify your best days to conceive.
Cycle Length Calculator
Track and analyze your menstrual cycles.
Conception Date Calculator
Determine when conception likely occurred.
Implantation Calculator
Track the implantation timeline.
Chinese Gender Predictor
Traditional method for predicting baby's gender.
Baby Development
Weekly Baby Size Tracker
See how big your baby is each week of pregnancy.
Baby Growth Chart
Track growth percentiles after birth.
Baby Weight Percentile
Compare your baby's weight to averages.
Baby Sleep Schedule
Recommended sleep patterns by age.
Tooth Eruption Calendar
Know when to expect each tooth.