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 Standard transthalamic plane (thalamus visible, cavum septi pellucidi, calipers outer-to-inner). Calculate Clinician tools Estimated GA: — — weeks Percentile for BPD at this GA: — Typical … 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 hCG results and the date and time for each draw. This calculator shows the percent change over your actual time gap and the change normalised to 48 hours. Draw 1 Date & time hCG (IU/L) Draw 2 Date & time hCG (IU/L) Calculate Clear Advanced — Observed change between tests — 48-hour normalised … Read more
Enter age, height and weight or BMI, 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) … 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 (optional) No age? We’ll assume 30 years. Ethnicity (optional) African American Hispanic White / Other No choice? We’ll … 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 to see the expected NT, then enter your measured NT and gestational age to get a percentile and a simple normal range check. Estimate your nuchal translucency Crown rump length (CRL, mm) Estimated gestational age (days) Auto filled from CRL. You can edit this if your scan reported GA directly. Estimate … 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 context. Mean Sac Diameter (MSD) ➜ Early Gestational Age Length (mm) Width (mm) Height (mm) Show advanced options Units mm cm Use … Read more
Enter your ovulation date and the first day of your next period. The calculator returns your luteal phase length in days and classifies it as short, normal, or long. 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
Instantly estimate how far along you are in weeks and days. Enter your Last Menstrual Period (LMP), Ultrasound date, Conception date, or Due Date to find your current gestational age, due date, and see your baby’s size today. How do you want to calculate? Use Last Menstrual Period (LMP)I already know my Due DateUse Ultrasound … Read more