Baby formula calculator by age using AAP 2.5 oz/lb guidelines. Calculate daily formula needs (max 32 oz), determine feeding frequency by age (8x newborn → 4x at 6+ months), compare formula costs (powder $0.12/oz vs concentrate $0.18/oz vs ready-to-feed $0.30/oz = $1,200/year savings), get safe preparation guides, water safety rules (boiling, Cronobacter prevention), storage times (2 hours room temp, 24 hours refrigerated), transition timeline (solids at 6 months, whole milk at 12 months), special formula options (soy/hypoallergenic), and WIC cost-saving strategies.
Frequently Asked Questions
How much formula does my baby need by age?
Babies need approximately 2.5 oz of formula per pound of body weight daily, up to 32 oz maximum.
Newborns: 2-3 oz every 3-4 hours (16-24 oz/day), 1-3 months: 4-6 oz every 4 hours (24-32 oz/day), 4-6 months: 6-8 oz every 4-5 hours (28-32 oz/day), 6-12 months: 6-8 oz 3-4 times daily (24-32 oz/day) plus solid foods.
What is the cost difference between formula types?
Powder formula costs $0.12-0.15/oz ($870-1,090/year), liquid concentrate costs $0.18-0.22/oz ($1,310-1,600/year), and ready-to-feed costs $0.28-0.35/oz ($2,040-2,550/year).
Powder is most economical, saving $1,200+ annually versus ready-to-feed.
Generic brands can save additional 40% without sacrificing FDA-regulated nutrition standards.
How long can prepared formula be stored?
Prepared formula follows the 2-1-1 rule: 2 hours at room temperature, 1 hour once feeding begins, 1 day (24 hours) in the refrigerator.
Never reheat partially consumed bottles.
Unopened powder lasts 1 month after opening, concentrate and ready-to-feed last 48 hours refrigerated after opening.
When can babies transition from formula to regular milk?
Babies can transition to whole milk at 12 months.
Start introducing solid foods at 6 months while continuing formula.
From 9-12 months, gradually replace one formula feeding with whole milk.
Never give cow milk before 12 months as it lacks essential nutrients and can cause iron deficiency anemia.
Do I need to boil water for formula preparation?
For healthy full-term babies over 3 months using municipal water, boiling is not necessary.
Always boil water for: premature babies, infants under 3 months, immunocompromised babies, well water users, or areas with water quality concerns.
Boil for 1 minute, cool to 70°C (158°F) to kill Cronobacter bacteria.
How can I reduce formula costs with WIC or other programs?
WIC provides free formula for eligible families (income <185% poverty level), covering 80-100% of needs.
Store brands save 40% with identical FDA nutrition.
Buy in bulk at warehouse clubs for 25-30% savings.
Subscribe-and-save programs offer 15-20% discounts.
Check manufacturer websites for coupons and samples.
About This Page
Editorial & Updates
- Author: SuperCalc Editorial Team
- Reviewed: SuperCalc Editors (clarity & accuracy)
- Last updated: 2026-01-13
We maintain this page to improve clarity, accuracy, and usability. If you see an issue, please contact hello@supercalc.dev.
Important Disclaimer
This calculator is for general informational and educational purposes only. Results are estimates based on your inputs and standard formulas.