Birth Weight Calculator

Assess newborn birth weight, calculate percentiles, and classify weight category based on gestational age.

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Important Health Disclaimer

This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.

For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.

Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.

Not a substitute for professional medical advice

Birth Information

weeks

Maternal Factors (Optional)

cm
kg

Birth Weight Classification

3200 g

Normal Birth Weight

Percentile
10-25th
Weight in kg
3.20 kg
Weight in lbs
7.1 lbs
Expected Range
3050-4050g

Size for Gestational Age

Appropriate for Gestational Age (AGA)

Based on weight at 40 weeks gestation

Weight Categories

ELBWExtremely Low Birth Weight
0-1000g
VLBWVery Low Birth Weight
1000-1500g
LBWLow Birth Weight
1500-2500g
NBWNormal Birth Weight
2500-4000g
HBWHigh Birth Weight
4000-4500g
MacrosomiaVery High Birth Weight
4500-4500+g
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