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Both calculators run independently — change the inputs on either side to compare results.

Fetal Growth Percentile Calculator

Estimates fetal weight from ultrasound biometry (BPD, HC, AC, FL) and plots it against gestational-age percentiles. Used by clinicians and expectant parents to detect growth restriction or macrosomia.

Biparietal Diameter (BPD) (mm)

Head Circumference (HC) (mm)

Abdominal Circumference (AC) (mm)

Femur Length (FL) (mm)

Fill in the required fields to see your result.

Pregnancy

Pregnancy Body Changes Calculator

Track how your waist measurement is expected to expand week by week during pregnancy. Helpful for planning maternity clothing and monitoring abdominal growth against typical patterns.

Pre-pregnancy Waist (cm)

Current Pregnancy Week (weeks)

Fill in the required fields to see your result.

Key differences

	Fetal Growth Percentile Calculator	Pregnancy Body Changes Calculator
Category	Pregnancy	Pregnancy
Inputs required	4	2
Result	Estimated Fetal Weight (grams)	Expected waist measurement (cm)
What it does	Estimates fetal weight from ultrasound biometry (BPD, HC, AC, FL) and plots it against gestational-age percentiles. Used by clinicians and expectant parents to detect growth restriction or macrosomia.	Track how your waist measurement is expected to expand week by week during pregnancy. Helpful for planning maternity clothing and monitoring abdominal growth against typical patterns.