Breast Milk Intake Calculator
Find out how much breast milk your baby needs per day — and per feeding.
Estimated Daily Intake
Every baby is different — use this as a starting point, not a strict target.
Supply typically regulates around this time. Output may feel lower — this is normal.
Estimates based on AAP (American Academy of Pediatrics) and WHO breastfeeding guidelines. Every baby is different — consult your pediatrician if you have concerns about your baby's intake.
How Much Breast Milk Does a Baby Need?
Between 1–6 months, most babies need about 22–28 oz (650–830 mL) of breast milk per day. This stays relatively stable even as your baby grows — unlike formula, breast milk changes composition to meet your baby's needs.
A simple rule of thumb from the AAP: babies need approximately 2.0–2.8 oz of breast milk per pound of body weight per day, up to a maximum of about 32 oz (950 mL). But remember — every baby is different, and these are estimates, not targets.
Once solids are introduced around 6 months, breast milk intake gradually decreases as food becomes a larger part of your baby's diet.
Knowing your baby's daily intake helps you plan your pumping output and manage your freezer stash. Use our Pumping Schedule Generator to plan how often to pump.
Track Your Output Against Baby's Needs
Use our Pumping Tracker app to log every session and see if your daily output matches your baby's intake needs.
How Much Breast Milk Does My Baby Need?
This free breast milk intake calculator estimates how much milk your baby needs per day and per feeding based on age and weight. The calculations follow AAP (American Academy of Pediatrics) and WHO (World Health Organization) feeding guidelines.
Between 1–6 months of age, breastfed babies typically consume 19–30 oz (570–900 mL) per day, with most averaging about 25 oz (750 mL). Unlike formula-fed babies, breastfed babies' daily intake stays relatively stable from month 1 to month 6 — they don't keep increasing as they grow because breast milk composition changes to meet evolving needs.
Per-feeding amounts depend on how many times your baby eats. A baby who feeds 8 times per day needs about 3–3.5 oz per feed. A baby who feeds 6 times per day needs about 4–4.5 oz per feed. If you're preparing bottles for daycare, start with 3–4 oz and let the caregiver offer more if baby seems hungry.
After 6 months, breast milk intake gradually decreases as solid foods are introduced. By 9–12 months, many babies get about 50–70% of their calories from breast milk and the rest from solids. There's no need to abruptly change bottle sizes — let your baby guide the transition.