Infant Feeding Schedule Calculator
Estimates how many millilitres of milk or formula a baby needs per feeding based on weight, age, feeding type, and growth pattern. Use it to plan daily feeding routines from newborn through early solid-food introduction.
Last updated: September 2026
Formula below · 3 sources (CDC, healthychildren.org, aap.org) · Updated Sep 2026
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About this calculator
Infant daily milk intake is broadly estimated at 150 mL per kilogram of body weight, capped at about 946 mL (32 oz) a day, the usual upper limit for formula. The calculator divides that daily total by six feeds to give a per-feed volume. For formula feeding this is the bottle size; for mixed feeding it is the total milk per feed (breast plus formula or expressed milk), so offer the breast first and top up with the bottle. For exclusive breastfeeding the volume at the breast cannot be measured, so the calculator shows on-demand guidance plus the per-feed amount to use when giving expressed milk by bottle. From about 26 weeks (6 months), when solid foods are introduced, milk per feed is reduced by 10%. Formula: mL per feed = round(min(weight × 150, 946) × ageFactor ÷ 6), with ageFactor 0.9 after 26 weeks. Weight gain and wet diapers are better guides than any calculated volume.
How to use
Suppose your baby weighs 4.5 kg, is 10 weeks old and is formula-fed. Daily need = 4.5 × 150 = 675 mL (under the 946 mL cap). Divide by 6 feeds: 675 / 6 = 112.5, rounded to 113 mL per feed. For a mixed-fed baby of the same weight, 113 mL is the total milk per feed: if the baby has just breastfed, offer a smaller top-up bottle. For a 7.5 kg, 30-week-old baby: 7.5 × 150 = 1,125 mL is capped at 946 mL, × 0.9 after 26 weeks = 851 mL, ÷ 6 ≈ 142 mL per feed.
Frequently asked questions
How many mL of formula should a newborn have per feeding by weight?
A common guideline is 150 mL of formula per kilogram of body weight spread across the day. For a 3.5 kg newborn that works out to 525 mL per day, or roughly 87 mL per feed across six feeds. Every baby is different, so watch for hunger cues and consult your paediatrician if you are concerned about under- or over-feeding.
How does feeding type affect how much milk a breastfed baby needs?
Breastfed babies self-regulate at the breast, so their intake cannot be measured directly and no volume target is needed: feed on demand, usually 8–12 times in 24 hours in the early weeks, and judge adequacy by weight gain and wet and dirty diapers. Their total intake is similar to formula-fed babies (roughly 750–900 mL a day from 1 to 6 months). That is why, for exclusive breastfeeding, the calculator gives on-demand guidance and the per-feed amount to use only when giving expressed milk by bottle. Pre- and post-feed test weighing on a calibrated scale is the gold standard if intake must be measured.
When should I reduce feeding amounts as my baby gets older?
Solid foods are recommended from about 6 months (26 weeks), not before 4 months, and milk remains the main source of nutrition through the first year. This calculator applies a 10% reduction in milk per feed after 26 weeks to reflect the gradual shift. Continue offering milk on demand as complementary foods are introduced, and follow your healthcare provider's guidance on introducing solids.