Calculate recommended daily and per-feed milk intake for babies 0-12 months by weight and age. Covers formula and breast milk with growth spurt timing and feeding guidelines.
The Baby's Milk Intake Calculator estimates the recommended daily and per-feed volume of breast milk or formula based on a baby's weight and age. It uses a standard pediatric guideline of approximately 150 mL per kilogram per day (range: 120-180 mL/kg/day) to provide a practical starting point.
Feeding amounts are only estimates. Breastfed babies often self-regulate at the breast, while formula-fed babies and babies receiving expressed milk are more often measured by volume. Too little can affect growth; too much can increase spit-up and discomfort.
This calculator provides a daily total, a per-feed amount, daily calorie estimates, hydration context, and growth-spurt timing. It also includes age-specific feeding tables that cover typical frequency and volume ranges from newborn through 12 months.
This calculator gives a starting point for bottle-feeding amounts based on weight and age. It is mainly useful when you need a measured volume for formula or expressed milk, or when you want a rough range before checking with a pediatrician.
Daily Milk Volume = Weight (kg) × 150 mL/kg/day Range: 120-180 mL/kg/day Per Feed = Daily Total ÷ Number of Feeds Daily Calories ≈ Weight (kg) × 110 kcal/kg/day Water from Milk ≈ Daily Volume × 0.87 (milk is 87% water)
Result: Daily: 750 mL (25.4 oz). Per feed: 94 mL (3.2 oz). Range: 600-900 mL.
At 5 kg, the standard guideline recommends 750 mL/day (150 mL/kg). Spread over 8 feeds, that's about 94 mL per feed. This falls within the healthy range for an 8-week-old infant.
Breast milk and modern formula both provide approximately 20 calories per ounce, but their composition differs. Breast milk contains antibodies (IgA), living immune cells, enzymes, and growth factors that formula cannot replicate. However, formula provides iron fortification and vitamin D that may be insufficient in breast milk alone. Both adequately support growth when provided in appropriate volumes.
Babies follow individual growth curves, not fixed weight targets. A baby consistently at the 25th percentile is just as healthy as one at the 75th. Concerns arise when a baby crosses percentile lines (up or down) significantly. The feeding amounts in this calculator support normal growth along your baby's established curve.
Around 6 months, complementary foods are introduced alongside continued milk feeding. Initially, solids provide minimal calories — milk remains the primary nutrition source. By 9-12 months, solids should provide about 30-40% of calories, with milk declining to 600-720 mL/day. The transition should be gradual, baby-led, and guided by developmental readiness signs (sitting, head control, pincer grasp, interest in food).
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This page estimates bottle-feeding volumes by applying a simple milk-intake range in milliliters per kilogram per day, then dividing the selected daily total by the number of feeds entered. It is meant to provide a practical bottle-volume starting point for formula or expressed breast milk, not to replace infant growth review or lactation support.
Infant feeding needs vary with age, gestation, illness, growth velocity, feeding method, and whether the baby is taking milk directly at the breast or by bottle. The output should therefore be used as context, with weight gain, wet diapers, and pediatric advice carrying more weight than the worksheet alone.
This calculator is most useful for expressed breast milk bottles and formula. Breastfed babies at the breast self-regulate intake and may not follow exact volume guidelines. For pumping moms, use the "Breast milk" setting for expressed milk amounts.
The calculated amount is a guideline. During growth spurts (see the growth spurt table), babies may want 20-30% more for 2-7 days. If consistently wanting much more, discuss with your pediatrician — it may be time to adjust.
Babies under 6 months should not receive plain water. Breast milk and formula provide all necessary hydration (~87% water). Adding water can dilute electrolytes (water intoxication) and reduce caloric intake.
Generally 32 oz (960 mL) per day is the upper limit for formula. If your baby consistently needs more, your pediatrician may suggest earlier introduction of solids or a higher-calorie formula.
Adequate intake signs: 6+ wet diapers/day, steady weight gain (following their growth curve), alert and content between feeds, good skin turgor. Insufficient intake signs: fewer wet diapers, weight loss, lethargy, prolonged crying.
Newborns (0-4 weeks): yes, every 3-4 hours until birth weight is regained. After that, you can generally let healthy babies sleep through one longer stretch (4-5 hours) at night and feed on demand during the day.