👶 Fetal Growth & Ultrasound

4 calculators in this category.

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Understand your scan report: estimated fetal weight and percentile from ultrasound measurements, and a week-by-week fetal growth chart.

Fetal Weight (EFW)

Estimate fetal weight (EFW) from your ultrasound report — BPD, HC, AC and FL in mm — with the Hadlock formula, and see the approximate percentile for the week of pregnancy.

Fetal Growth Chart

See your baby's average weight and length for any week of pregnancy (8–42 weeks), the normal weight range, and a size comparison, with a full fetal growth chart.

Work out gestational age and due date from the crown-rump length (CRL) on your first-trimester ultrasound, and check it against your last-period dates.

Estimate gestational age and due date from second- and third-trimester ultrasound measurements — BPD, HC, AC and FL — with Hadlock's formulas, and see the age each measurement matches.