Determine the statistical likelihood of paternity by comparing intercourse dates against your estimated fertile window. This clinical tool utilizes reproductive algorithms regarding sperm viability (up to 5 days) and ovulation timing to calculate which partner’s timing aligns best with conception. While only a DNA test can provide 100% certainty, this calculator provides a comparative probability … Read more

TSH Interpreter Check if your thyroid levels are normal for pregnancy Pregnancy Stage Trying to ConceiveFirst Trimester (Weeks 1-12)Second Trimester (Weeks 13-26)Third Trimester (Weeks 27+) Your TSH Level mIU/L Current Weight (Optional) lbskg Used to estimate dosage if needed. Analyze Results Please enter a valid TSH value. — Normal Ranges (ATA Guidelines) TTC / Non-Pregnant … Read more

Enter sex, age, and head circumference to estimate a percentile and z-score using WHO growth standards. Use results to track growth over time, not as a diagnosis. Head Circumference Percentile WHO Growth Standards (0–5 Years) Sex Girl Boy Age Wks Mos Yrs Head Circumference in cm Measure the widest part, just above eyebrows and ears. … Read more

Estimate miscarriage risk by week and day. Add age and, if you like, heartbeat, prior losses/births, and BMI for a more precise result. Miscarriage Risk Calculator Estimate probability based on day-specific data Maternal Age Week of Pregnancy Day (0-6) Advanced Factors Optional Have you had an ultrasound? No / Not yet Yes Did you see … Read more

Wondering if your baby will inherit your blood type? Our Baby Blood Type Calculator uses standard genetic inheritance rules (Mendelian genetics) to predict the possible blood groups for your child. Simply select the blood type (A, B, AB, or O) and Rh factor (+ or -) for both biological parents to see the results instantly. … Read more

Will your baby have mom’s deep brown eyes or dad’s sparkling blue ones? While genetics can be complex, our Baby Eye Color Calculator uses a standard scientific model to predict the probability of your baby’s eye color. Simply select the eye color of both parents below to see the genetic possibilities instantly. Baby Eye Color … Read more

Knowing when to head to the hospital is one of the biggest questions during labor. Our easy-to-use Contraction Timer helps you track the frequency and duration of your contractions with a single button. It automatically calculates your pattern and alerts you when you reach the “5-1-1 Rule”—the gold standard for active labor. Contraction Timer Track … Read more

Ensuring a healthy pregnancy starts with tracking your growth. Our Pregnancy Weight Gain Calculator uses the official Institute of Medicine (IOM) guidelines to determine your safe weight range based on your pre-pregnancy BMI. Whether you are expecting one baby or twins, this tool provides a personalized target for your total gain and a breakdown of … Read more

Our Chinese Gender Predictor (also known as the Chinese Gender Calendar) offers a fun, instant way to guess your baby’s sex. Based on a 700-year-old legend, this calculator converts your dates to the Chinese Lunar Calendar to predict if you are likely having a boy or a girl. Chinese Gender Predictor Based on the ancient … Read more

Enter your due date to see the chance of giving birth on each date around it. The chart shows daily birth probabilities, your most likely week of delivery, and how often births happen early or late compared with the due date. Estimated due date (EDD) This calculator shows how your chance of going into labour … Read more