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
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
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 labor … Read more
Enter your beta hCG level and due date to see whether your result sits within the typical range for your current week (3–18). You will also get a simple chart for context and guidance on what your number may mean. Enter your beta hCG level (mIU/mL): Enter your due date: Calculate > Reference band shown … Read more
Estimate your chance of getting at least one euploid embryo from an IVF retrieval using two inputs: AMH (ng/mL) and age. The calculator shows a single percentage result and a short note about how your AMH compares with a typical anchor for your age. AMH level (ng/mL) Your age (years) Calculate Clear Chance of ≥1 … Read more
Plan your frozen embryo transfer. Choose medicated or cryonatural, enter your next cycle start and embryo day (3/5), and we’ll estimate the transfer date, hormone-timing milestones, and your beta-hCG test day. FET cycle type Medicated Cryonatural History of thin uterine lining? NoYesI don’t know Cycle length Used only for cryonatural cycles (default 28 days). Next … Read more
Most pregnancies end in a live birth. This calculator uses a baseline stillbirth rate plus age, BMI, ethnicity and selected medical factors to give a simple statistical estimate. It is for education and counselling only, not to predict what will happen in any individual pregnancy. Age of the pregnant person Height & weight Imperial (ft, … Read more