Bottle Feeding Calculator
Calculate the number of bottles per day and ounces per bottle for your baby based on age and weight.
Results
Visualization
How It Works
Bottle-fed babies (formula or pumped breastmilk) typically need 2-2.5 oz per pound per day for formula, or about 25 oz/day for breastmilk. The number of feedings decreases as babies grow and take more per session. Not medical advice.
The Formula
Formula: Weight (lbs) x 2.5 oz, max 32 oz/day
Breastmilk: ~25 oz/day (stays consistent 1-6 months)
Per bottle = Daily total / feedings per day
Breastmilk: ~25 oz/day (stays consistent 1-6 months)
Per bottle = Daily total / feedings per day
Variables
- 2.5 oz/lb — Formula guideline per pound of body weight
- 25 oz — Average daily breastmilk intake (1-6 months)
Example
14 lb baby at 4 months on formula: 14 x 2.5 = 35 (capped at 32) oz/day, 6 bottles = ~5.3 oz each.
Tips
- Breastmilk intake stays remarkably constant at 25 oz/day from 1-6 months
- Formula intake increases with weight, unlike breastmilk
- Pace bottle feeding (tip the bottle, take breaks) to prevent overfeeding
- Most babies sleep through the night (no feeds) by 4-6 months