Infant Feeding Calculator

In the first few weeks, newborns typically consume about 1.5 to 3 fl oz (45–90 mL) per feeding, roughly every 2–3 hours. Daily intake is generally around 150–200 mL per kilogram of body weight. By one month, most babies drink 3–4 fl oz per feeding, 8–10 times a day. See also our calculate Total GCS Score, Eye Opening (E) & Verbal Response (V) — Pediatric GCS.

A common guideline is to offer approximately 2.5 fl oz (75 mL) of formula per pound of body weight per day, up to a maximum of about 32 fl oz (950 mL). This calculator uses your baby's weight and age to apply the appropriate age-based recommendation automatically.

Breastfed babies typically consume about the same volume as formula-fed babies — roughly 150–200 mL per kg of body weight per day in early months. Between 1 and 6 months, daily intake tends to stabilize at around 25–30 fl oz (750–900 mL) regardless of the baby's weight gain.

Signs that your baby is getting enough include steady weight gain after the first two weeks, at least 6 wet diapers per day, and seeming content and settled after feedings. If you're concerned about your baby's intake or weight, consult your pediatrician.

Yes, it is generally safe to switch between formula brands or types, as most standard infant formulas meet the same nutritional requirements. However, switching abruptly may cause temporary digestive changes. Always consult your pediatrician before making significant changes to your baby's diet.

Formula and breast milk volumes are similar, but breast milk composition changes over time to match the baby's needs, so breastfed babies may regulate their intake differently. Formula is more standardized at about 67 kcal per 100 mL, making it easier to measure exact intake.

Newborns usually need feeding every 2–3 hours, resulting in 8–12 feedings per day. As babies grow, feedings become less frequent — by 2–3 months, many babies settle into 6–8 feedings per day. Always follow your baby's hunger cues alongside scheduled amounts.

This calculator is designed for babies from birth to 6 months of age. After 6 months, when solid foods are introduced, milk intake gradually decreases. At that stage, guidance from your pediatrician becomes especially important for balancing solids and milk feeds.