Baby Formula Calculator
Calculate how much formula to feed your baby per day and per feeding based on age and weight.
Formula
Daily oz = weight (lbs) × 2.5 (max 32 oz); Oz per feed = daily oz ÷ feedings
- Rule of thumb: 2.5 oz per pound of body weight per day.
- Maximum: 32 oz per day regardless of weight.
- Always check with your pediatrician for personalized guidance.
- Standard formula: 1 unpacked scoop per 2 oz of water (check brand instructions).
10 lb baby, 8 weeks, 8 feedings/day
Inputs
- Baby Weight: 10 lbs
- Baby Age: 8 weeks
- Feedings per Day: 8
Daily = 10×2.5 = 25 oz. Per feeding = 25/8 = 3.1 oz with 3.1 oz water (1.6 scoops).
Frequently asked questions
How much formula does a newborn need?
Newborns typically need 1.5–3 oz per feeding, every 2–3 hours.
Can I overfeed a formula-fed baby?
Yes — unlike breastfeeding, formula feeding can lead to overfeeding. Follow weight-based guidelines.
When should I increase formula amounts?
Increase when your baby finishes every bottle and seems hungry shortly after. Discuss with your pediatrician.
How do I prepare formula?
Follow your formula brand's exact instructions. Most use 1 unpacked level scoop per 2 oz of water.