Track your baby's growth compared to WHO international standards
Get personalized feeding and development recommendations
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For babies 0-24 months only
Growth Analysis
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Personalized Recommendations
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⚠️ Medical Disclaimer: This calculator provides general information based on WHO growth standards. It is not a substitute for professional medical advice. Always consult with your pediatrician for health-related decisions.
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Understanding Baby Growth Percentiles
Growth percentiles are a way to compare your baby's size to other babies of the same age and gender. The World Health Organization (WHO) growth standards are based on healthy breastfed infants from six countries worldwide, representing optimal growth conditions.
How Percentiles Work
If your baby is in the 75th percentile for weight, it means they weigh more than 75% of babies the same age and gender, and less than 25%. Percentiles help pediatricians track growth patterns over time.
What's Considered Normal?
Typically, percentiles between 5th and 95th are considered within the normal range. However, consistency in growth pattern is more important than any single measurement.
Key Growth Milestones 0-24 Months
0-3 months: Rapid weight gain (20-30g per day)
4-6 months: Weight typically doubles from birth
7-12 months: Weight triples from birth, height increases by 50%
13-24 months: Steady growth, more influenced by genetics
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WHO Growth Standards
The World Health Organization growth standards are based on the Multicentre Growth Reference Study (MGRS) conducted between 1997 and 2003. This study followed more than 8,000 children from six diverse countries.
Why WHO Standards Matter
WHO standards represent how children should grow when free from disease and with optimal feeding practices. They are considered the gold standard for assessing infant growth worldwide.
Key Features of WHO Standards
Based on breastfed infants as the biological norm
International sample representing diverse ethnic backgrounds
Standards for weight-for-age, length/height-for-age, weight-for-length/height
Available for children 0-5 years
Frequently Asked Questions
What is a baby growth percentile?
A growth percentile shows how a baby's size compares to other babies of the same age and gender. For example, a baby in the 60th percentile for weight is heavier than 60% of babies the same age.
How accurate is this baby growth calculator?
This calculator provides estimates based on WHO growth standards. While it offers a good general indication, always consult with your pediatrician for precise medical guidance and regular growth monitoring.
What is considered a normal growth percentile?
Percentiles between 5th and 95th are generally considered within the normal range. However, consistency in growth pattern is more important than any single measurement.
How often should I track my baby's growth?
Most pediatricians recommend growth tracking at regular well-baby visits: at birth, 2 weeks, 1 month, 2 months, 4 months, 6 months, 9 months, 12 months, 15 months, 18 months, and 24 months.
What if my baby's percentile changes significantly?
Small fluctuations are normal, but significant changes (more than two percentile lines) should be discussed with your pediatrician to rule out any underlying issues.
Can I use this for premature babies?
For premature babies, use corrected age (actual age minus weeks premature) until about 2 years old. Always follow your pediatrician's guidance for premature infant growth tracking.