Enter GA, LMP, or EDD to see personalized date windows for NT, NIPT, the anatomy scan, gestational diabetes screening, and Tdap. Reference date (today or visit date) We calculate your schedule relative to this date. How do you want to enter progress? By GA (w+d) By LMP date By EDD date Weeks Days (0–6) LMP … Read more
Use your ultrasound’s estimated fetal weight (EFW) and gestational age to see the percentile and a typical range based on a Hadlock-style reference. Gestational age (weeks + days) Typical use: 18–40 weeks. We clamp to 14–42 if outside. Estimated fetal weight (EFW) in grams From your ultrasound report. Lookup percentile — — — Percentile is … Read more
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 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