Baby Formula Calculator

A general guideline is 2.5 oz (75mL) of formula per pound (0.45kg) of body weight per day. A 10-pound baby needs about 25 oz/day. However, this varies by age: Newborns (0–2 weeks): 1–3 oz per feeding, 8–12 feedings/day; 1–3 months: 3–4 oz, 6–8 feedings; 4–6 months: 4–6 oz, 5–6 feedings; 6–12 months (with solids): 6–8 oz, 3–5 feedings. Always follow your baby's hunger cues — these are estimates. Babies who are growing well and seem satisfied are getting enough.

Signs your baby is getting enough: (1) Steady weight gain (typically 4–7 oz/week in the first few months); (2) 6+ wet diapers per day after day 4–5; (3) Regular bowel movements; (4) Content between feedings for most of the time; (5) Meets developmental milestones. Signs of underfeeding: excessive crying, poor weight gain, fewer wet diapers. Signs of overfeeding: excessive weight gain, spitting up large amounts, gassiness. Your pediatrician tracks weight at well-baby visits to confirm adequate nutrition.

No — always follow the formula manufacturer's mixing instructions exactly. Standard powdered formula is typically 1 unpacked scoop per 2 oz of water. Using too much powder (over-concentrated) can overload a baby's kidneys with too much sodium, protein, and minerals. Using too little powder (diluting) can lead to malnutrition and dangerous electrolyte imbalances (hyponatremia). Never add extra water to formula to "stretch" it — this is medically dangerous. Always use the scoop provided, not any other measuring device.