Compare calculators

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

Baby Feeding Amount Calculator (per Feeding)

Estimate how much milk a formula-fed baby needs per feeding from body weight, feeds per day, and the standard daily intake per kilogram — in millilitres or ounces.

Baby's weight (kg)

Daily intake per kg of body weight (ml/kg/day)

Number of feedings per day (feeds)

Output unit

Amount per feeding

75 ml or oz

Pregnancy

Baby Size Calculator

Estimates fetal weight and size using gestational age alone or ultrasound measurements (BPD, FL, AC). Used by parents and clinicians to track growth against standard developmental charts.

Gestational Age (weeks)

Additional Days (days) (optional)

Biparietal Diameter (BPD) (mm) (optional)

Femur Length (FL) (mm) (optional)

Abdominal Circumference (AC) (mm) (optional)

Fill in the required fields to see your result.

Key differences

	Baby Feeding Amount Calculator (per Feeding)	Baby Size Calculator
Category	Pregnancy	Pregnancy
Inputs required	4	5
Result	Amount per feeding (ml or oz)	Estimated Baby Weight (grams)
What it does	Estimate how much milk a formula-fed baby needs per feeding from body weight, feeds per day, and the standard daily intake per kilogram — in millilitres or ounces.	Estimates fetal weight and size using gestational age alone or ultrasound measurements (BPD, FL, AC). Used by parents and clinicians to track growth against standard developmental charts.