Baby Formula Calculator
Determine how much formula to offer per feeding and per day using pediatric nutrition guidelines.
For babies older than 12 months, transition to whole milk after pediatric approval.
Results
Daily total
845 mL
≈ 28.6 fl oz per day.
Per feed
141 mL
≈ 4.8 fl oz each feeding.
Guideline
130 mL/kg/day
Weight used: 6.50 kg.
How to Use This Calculator
Enter baby's age
Guideline volumes decrease gradually as babies start solids (after ~6 months).
Input weight and units
We calculate everything using kilograms, but you can enter weight in pounds.
Add feeding frequency
Divide the daily total by planned feeds to get per-feed volume.
Formula
Daily volume (mL) = Weight (kg) × Age-based guideline (mL/kg/day).
Guidelines reference American Academy of Pediatrics (AAP) and WHO feeding recommendations: 150 mL/kg/day for 0–2 months, tapering to ~100 mL/kg/day by 12 months.
Frequently Asked Questions
How do I know if my baby needs more?
Look for hunger cues (rooting, sucking on hands) and ensure adequate wet diapers (6–8 daily) and weight gain.
Can I pre-make formula?
Prepared formula lasts 24 hours refrigerated. Discard leftovers from a feeding to prevent bacterial growth.
What if baby spits up?
Spitting up can be normal. If weight gain or breathing is affected, ask your pediatrician before changing volumes.
Do recommendations differ for preemies?
Yes. Preterm infants often need higher-calorie formula or fortified breast milk. Follow NICU guidance.
Can I mix breastmilk and formula?
Yes, but mix separately to avoid waste. Offer breast milk first, then supplement with calculated formula volume.