1. What is Percentage Weight Loss in Babies?

Percentage weight loss in newborns is a measure of how much weight a baby has lost compared to their birth weight. It's normal for babies to lose some weight in the first few days after birth, but excessive loss may indicate feeding problems or other health issues.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( \text{Birth Weight} \) — Baby's weight at birth (kg)
• \( \text{Current Weight} \) — Baby's current weight (kg)

Explanation: The formula calculates what percentage of the original birth weight has been lost.

3. Importance of Monitoring Weight Loss

Details: Monitoring weight loss helps assess whether a newborn is feeding adequately. Most babies lose 5-7% of birth weight in first few days and regain it by 10-14 days. Losses >10% may require medical evaluation.

4. Using the Calculator

Tips: Enter birth weight and current weight in kilograms. Both values must be positive numbers. Weights should be measured using the same scale when possible.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: 5-7% loss in first 3-5 days is typical for breastfed babies. Formula-fed babies may lose slightly less.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10% of birth weight, or if baby isn't regaining weight by day 5-7.

Q3: How often should I weigh my baby?
A: In first week, daily weights may be helpful. After that, weekly is usually sufficient unless concerns exist.

Q4: Does this apply to premature babies?
A: Preterm infants may lose more weight (up to 15%) and take longer to regain it. Consult your pediatrician.

Q5: What if my baby continues to lose weight after day 5?
A: This may indicate inadequate feeding and requires medical evaluation to assess feeding technique and milk supply.