Health & Fitness
Baby Formula & Infant Feeding Amount Calculator
Calculate how much formula to feed your baby based on age and weight using standard pediatric guidelines (150 ml/kg/day). Covers newborn to 12 months.
Estimates only. Always follow your paediatrician's advice.
Age stage: 2 weeks–2 months
Reference: feeding by age
| Age | Feeds/day | ml/kg/day | oz/lb/day |
|---|---|---|---|
| 0–2 weeks | 8 | 150 | 2.5 |
| 2 weeks–2 months | 8 | 150 | 2.5 |
| 2–4 months | 6 | 150 | 2.5 |
| 4–6 months | 5 | 120 | 2 |
| 6–12 months | 4 | 90 | 1.5 |
Formula types: how to prepare each
- Powder: The most economical option. Measured scoops are mixed with water. Follow the exact scoop-to-water ratio on the label; do not pack the scoop or add extra powder. Must be used within 1 hour if left at room temperature, or within 24 hours if refrigerated.
- Liquid concentrate: A 1:1 mixture of concentrate and water. Easier to prepare consistently than powder. More expensive per ounce. Follow dilution instructions exactly.
- Ready-to-feed (RTF): No mixing required - pour directly into a bottle. Most convenient and sterile, but the most expensive per ounce. Ideal for newborns, premature infants, or immunocompromised babies.
Age-based feeding guide
| Age | Amount per feeding | Frequency | Daily total (approx.) |
|---|---|---|---|
| Newborn (0–1 week) | 1–2 oz (30–60 ml) | Every 2–3 hours | 14–28 oz |
| 1–2 months | 2–4 oz (60–120 ml) | Every 2–3 hours | 18–32 oz |
| 2–4 months | 4–6 oz (120–180 ml) | Every 3–4 hours | 24–36 oz |
| 4–6 months | 4–6 oz (120–180 ml) | Every 4–5 hours | 24–36 oz |
| 6– months (with solids) | 6–8 oz (180–240 ml) | 4–5 times/day | 24–36 oz |
These are typical ranges. Every baby is different - always follow your pediatrician's guidance and feed on demand (when the baby shows hunger cues) rather than strictly by the clock.
Water quality for formula preparation
For infants under 2 months or immunocompromised babies, use pre-boiled and cooled water or commercially sterile bottled water. Boiling for 1 minute kills bacteria; let it cool to body temperature (≨37°C / 98.6°F) before mixing.
Well water and some tap water may contain high levels of nitrates, fluoride, or other minerals - consult your pediatrician or local water authority if you are unsure about your water source.
Hunger cues
Feed your baby on demand - when they show early hunger signals rather than waiting until they cry:
- Rooting: Turning the head from side to side, opening the mouth, searching for a nipple.
- Sucking motions: Sucking on hands, fingers, or tongue.
- Fist to mouth: Repeatedly bringing hands to mouth.
- Increased alertness: Eyes wide open, moving arms and legs more actively.
- Crying: A late hunger cue - try to feed before this stage to avoid frustration during latching or bottle-taking.