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 (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

Estimate your current gestational age in weeks and days from your last menstrual period (LMP), ultrasound dating, conception date, or due date. How do you want to calculate? Use Last Menstrual Period (LMP)I already know my Due DateUse Ultrasound MeasurementsUse Conception Date First day of last period * Cycle length (days) Standard is 28. Longer … Read more

Enter a fundal height (SFH) in cm to see its percentile for a given gestational age, or switch modes to estimate GA from SFH. You’ll also get the expected SFH, standard deviation, and a ± GA band. Fundal Height (SFH) — Percentile / GA Mode: SFH percentile at a given gestational age Estimate gestational age … Read more

Enter a crown-rump length (CRL) to estimate gestational age and due date. You can also choose a target GA to see the expected CRL and published range where available. Units mm cm CRL value (mm) Measurement date (optional) Target GA for expected CRL (optional) Target gestational age weeks days Published expected-CRL data covers 8w 2d … Read more

Use this BBT time adjustment calculator when a basal temperature was taken earlier or later than usual. Enter both times and your reading to estimate the adjusted BBT. BBT Time Adjuster Usual temperature check time Actual temperature check time Units °F (default) °C Measured temperature (°F) Show advanced options Timing model Linear adjustment rate (°F … Read more