One of the most common questions new mothers ask is, “When will my period start again?” The answer is not a simple date—it depends entirely on biology. Your breastfeeding intensity, night feeds, and reliance on pacifiers all regulate the hormones that suppress ovulation. Use this calculator to generate a personalized timeline for your cycle’s return … Read more
Recovering from a Cesarean section is a major surgical event, typically requiring 6–8 weeks for initial healing. Unlike generic “week-by-week” guides, this tool generates a personalized calendar based on your specific surgery date, helping you verify exactly when you can expect to drive, lift your baby, and return to exercise safely. Enter your surgery date … Read more
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
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
For Entertainment Only: This chart is based on a 700-year-old legend. There is no scientific evidence that lunar cycles affect biological sex. Our Chinese Gender Predictor offers a fun way to explore ancient pregnancy folklore. Based on a 700-year-old legend, this tool converts your dates to the Chinese Lunar Calendar to ‘guess’ if it’s a … Read more