Formula Feeding Volume for a Day-Old Newborn
For a healthy term newborn on day 1-2 of life, each formula feed should be approximately 15-30 mL (0.5-1 ounce) per feeding, offered every 2-3 hours, with total intake in the first 48 hours averaging around 57 mL/kg/day. 1
Initial Feeding Volumes (First 48 Hours)
Healthy term formula-fed newborns consume approximately 57 mL/kg/day during the first 2 days of life when fed ad lib, which translates to roughly 115 mL/kg total over 48 hours 1
For a typical 3.5 kg newborn, this means approximately 200 mL total per day (about 6-7 ounces), divided into 8-12 feedings of 15-30 mL each 1
Formula-fed infants consume 2-3 times more volume than breastfed infants in the first 48 hours and experience only 2.7% weight loss by 48 hours, compared to higher losses in breastfed infants 1
Feeding Frequency and Approach
Feed every 2-3 hours (8-12 times per 24 hours) on demand rather than a rigid schedule, allowing the infant's hunger cues to guide frequency 2, 3
Standard 20 kcal/oz iron-fortified formula should be used exclusively—no water, juice, or other supplements 2, 3
Progression Beyond Day 2
By 2 months of age, intake increases to 24-32 ounces per 24 hours (approximately 150 mL/kg/day), divided into 6-8 feedings of 3-4 ounces each, every 3-4 hours 2, 3
This represents the normal developmental progression as gastric capacity increases and feeding intervals lengthen 2
Critical Pitfalls to Avoid
Most pediatricians significantly underestimate the intake of formula-fed newborns in the first 2 days, often expecting volumes similar to breastfed infants 1
Do not restrict formula intake based on assumptions—healthy term newborns will self-regulate and consume what they need when fed on demand 1
Avoid bottle propping during feedings 3
Only use standard 20 kcal/oz formula prepared according to manufacturer instructions—concentrated formulas are not indicated for healthy term infants 3
Post-Cesarean Considerations
The cesarean delivery itself does not change formula volume requirements for a healthy term newborn 1
Ensure adequate feeding frequency, as post-operative maternal factors may inadvertently delay feeding initiation or frequency