1. What is Newborn Weight Change Percent?

The newborn weight change percent calculates the percentage of weight gain or loss compared to birth weight. This is an important metric for assessing newborn health and nutrition in the early days of life.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Current Weight — Most recent weight measurement in grams
• Birth Weight — Weight at birth in grams

Explanation: The formula calculates what percentage the current weight differs from the birth weight, with positive values indicating weight gain and negative values indicating weight loss.

3. Importance of Weight Monitoring

Details: Newborns typically lose 5-10% of their birth weight in the first week, then regain it by 2 weeks. Monitoring helps identify feeding problems or health issues.

4. Using the Calculator

Tips: Enter both weights in grams for accurate calculation. Use the same units for both measurements. Weights should be measured on calibrated scales.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: 5-7% loss is typical, up to 10% may be normal, but more than 10% requires evaluation.

Q2: When should birth weight be regained?
A: Most babies regain birth weight by 10-14 days of age.

Q3: How often should newborns be weighed?
A: First weigh at birth, then at 24-72 hours, and at 1 week. High-risk infants may need more frequent monitoring.

Q4: What causes excessive weight loss?
A: Inadequate feeding, dehydration, or medical conditions like infection or metabolic disorders.

Q5: When to be concerned about weight gain?
A: If weight loss exceeds 10%, or if baby hasn't regained birth weight by 2 weeks.