Use a single femur length (FL) measurement to estimate gestational age (weeks+days) and see where that length sits by percentile for this stage. Femur length (FL) in mm Enter the measured femur length from ultrasound. Known GA (optional) If provided, we compute percentile at this GA. If left empty, we estimate GA from FL. Calculate … Read more
Enter a biparietal diameter (BPD) in millimetres. The tool estimates gestational age, shows the percentile, and lists a typical BPD range for that age. Biparietal diameter (BPD) in millimeters Copy the BPD measurement in millimeters from your ultrasound report. Known gestational age in weeks (optional) Enter the age on your report for the percentile comparison. … Read more
Enter weeks+days or DPO to see a typical hCG band for that stage. Add your result to compare against the band. How do you want to enter progress? By weeks + days By DPO (ovulation) GA = gestational age from last period. DPO = days past ovulation (we add 14 days to map to GA). … Read more
Enter two quantitative hCG blood-test results and their collection times. See the change between the tests, the equivalent 48-hour change, and an estimated doubling or halving time. First blood test Draw 1 date and time Use the collection time shown by your lab. Draw 1 hCG Enter the quantitative serum result in mIU/mL or IU/L. … Read more
Enter age, height and weight, select pregnancy or postpartum, and add optional risk factors. The calculator totals VTE (venous thromboembolism) risk points and shows a simple risk band. Use with a clinician. Patient’s current situation Patient is pregnant Patient has given birth (postpartum) Height and weight Imperial (ft, in, lb) Metric (cm, kg) Height (ft … Read more
Enter age, BMI or height and weight, ethnicity, prior vaginal birth, any vaginal birth since the caesarean, and whether the prior indication is recurrent. The result shows a VBAC probability and a simple score for counselling. Age (years) Enter your age in years. The starting value is 30. Ethnicity (optional) African American Hispanic White / … Read more
Enter the five findings from a cervical exam to get a Bishop score. The result shows how ready the cervix is for labour and whether induction is likely to work. Dilation (cm) Choose the closest finding closed 1–2 cm 3–4 cm ≥5 cm Effacement 0–30% 40–50% 60–70% ≥80% Cervical consistency Firm Moderately firm Soft Fetal … Read more
Enter a crown-rump length (CRL) to see NT reference values. If you also have the NT measured at that same scan, use the second panel to see its approximate position in the reference distribution. Estimate NT reference values from CRL Enter the crown-rump length measured on the ultrasound. This panel estimates gestational age and modeled … Read more
Enter gestational sac length, width, and height to get the mean sac diameter (MSD) and an early gestational age estimate. You can also enter a single MSD and add a scan date for a rough due-date projection. Mean Sac Diameter (MSD) ➜ Early Gestational Age Length (mm) Width (mm) Height (mm) Show advanced options Units … Read more
Enter your ovulation date and the first day of your next period. The calculator returns your luteal phase length in days and compares it with the common 11–17-day range. Luteal Phase Length Calculator Last ovulation date First day of period (after above ovulation) Show advanced options Counting method (label only) Standard (ovulation → day before … Read more