1. What is Weight Newborn Calculator?

The Weight Newborn Calculator calculates the percentage of weight loss in newborns by comparing birth weight to current weight. This helps monitor neonatal health and feeding adequacy in the early days of life.

2. How Does the Calculator Work?

The calculator uses the percentage loss formula:

Where:

• \( birth\_weight \) — Newborn's weight at birth (kg)
• \( current\_weight \) — Newborn's current weight (kg)

Explanation: The equation calculates what percentage of the original birth weight the newborn has lost.

3. Importance of Weight Loss Calculation

Details: Monitoring weight loss in newborns is crucial as excessive loss (>10%) may indicate feeding problems or other health issues requiring intervention.

4. Using the Calculator

Tips: Enter birth weight and current weight in kilograms. Both values must be valid (weight > 0). The calculator will show the percentage of weight lost.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: Most newborns lose 5-7% of birth weight in first few days, with 10% being upper limit of normal. Loss >10% warrants evaluation.

Q2: When should weight regain begin?
A: Typically by day 3-5, babies should stop losing and begin regaining weight, returning to birth weight by 10-14 days.

Q3: How often should newborns be weighed?
A: Daily in first week if concerns exist, otherwise at pediatric visits. Use same scale for consistency.

Q4: Does weight loss differ by feeding method?
A: Breastfed babies may lose slightly more (7-8%) than formula-fed (5-6%) in first days.

Q5: When to seek medical advice?
A: If loss >10%, not regaining by day 5, or signs of dehydration (few wet diapers, lethargy).