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How much formula does your baby need?
For babies who are fully formula-fed, the rule of thumb for the early months is about 2½ fl oz per pound of body weight per 24 hours (AAP) — roughly 150 ml per kg. Enter your baby's weight:
Most babies don't need more than about 7 oz (200 ml) per bottle.
Feeds by age (formula)
| Age | Feeds per day | Per feed |
|---|---|---|
| 0–6 weeks | 8–12 feeds a day | 1–3 oz (30–90 ml), building up |
| 6–12 weeks | 6–8 feeds a day | 3–4 oz (90–120 ml) |
| 3–4 months | 5–6 feeds a day | 4–6 oz (120–180 ml) |
| 4–6 months | 4–5 feeds a day | 5–7 oz (160–200 ml) |
| 6–9 months | 3–4 feeds a day | 6–7 oz (180–200 ml) |
| 9–12 months | 2–3 feeds a day | 7 oz (200 ml) |
Good to know
- Breastfeeding? Then this sum doesn't apply — feeding on demand is the norm.
- Around day 7–10, 6 weeks and 3 months many babies hit a growth spurt: extra demand is normal and passes by itself.
- From around 6 months solids gradually take over and the milk amount goes down; from 12 months, whole cow's milk can replace formula (AAP).
- Is your baby growing well and content after feeds? Then it's almost always fine — the growth chart at your well-child visits gives the best picture. If in doubt, ask your pediatrician.
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Create your own overview →Also handy: what diaper size fits your baby?
Guidance by age: 0–6 weeks · 6–12 weeks · 3–4 months · 4–6 months · 6–9 months · 9–12 months · 12–18 months · 18–24 months · 2–3 years · 3–4 years · 4–5 years