Free Newborn Weight Loss Percentage Calculator (Canada)
Calculate your newborn's weight loss percentage safely and instantly. Trusted and used by 50,000+ parents. Check pediatric-safe loss thresholds now.
Pediatric Tracking: Newborn Weight Loss
It is normal for newborns to lose a small percentage of their birth weight in the first 3 to 4 days of life. This occurs as they shed excess body fluids and adapt to feeding outside the womb.
Healthy breastfed infants typically lose up to 7-10% of their birth weight, while formula-fed infants lose up to 5%. Most babies regain this weight and return to their original birth weight by 10 to 14 days of age.
Our calculator helps parents and pediatricians monitor this percentage. A weight loss exceeding 10% requires evaluation by a doctor or lactation consultant to ensure the baby is latching properly and receiving adequate milk.
Frequently Asked Questions
Q: What is a normal weight loss for a newborn?
A loss of 5% to 7% is normal. A loss up to 10% is acceptable for breastfed babies, but requires close monitoring.
Q: When should a baby regain their birth weight?
Most healthy newborns return to their original birth weight by 10 to 14 days after birth.