Your Baby's Weekly Development
Select your babies week below to learn about exciting changes happening as your little one grows.
Baby Development Week Calculator
Let's calculate your baby's week for development tracking:
Don't know your due date? Use our Due Date Calculator
Your Baby is
4 Weeks Old.
Since your baby was born at term, developmental tracking is based on their actual birth date.
Baby Growth Percentile Calculator
Track Your Baby’s Weight & Height
See how your baby’s growth compares to others using standard percentiles.
Your Baby's Percentiles Are:
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Weight
Height
Head Circumference
What Is A Percentile?
A percentile tells you how your baby compares to other babies of the same age and gender for a specific measurement—like weight, height, or head size.
Example:
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If your baby is in the 60th percentile for weight, that means they weigh more than 60% of babies their age and less than 40%.
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If they’re in the 10th percentile, they weigh more than 10% and less than 90% of babies their age.
What’s “Normal”?
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Anywhere between the 3rd and 97th percentile is generally considered normal and healthy.
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What matters most is your baby’s growth over time, not a single number.
Track the Pattern
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Consistent growth on their own curve is a good sign—even if they’re in the 15th or 85th percentile.
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Sudden drops or jumps in percentile might warrant a check-in with your pediatrician.
"Decoding Baby Growth Percentiles: What They Mean for Your Child?"
Baby growth percentiles compare a child's measurements to those of peers the same age and sex. They are important for tracking patterns and identifying potential health concerns. Understanding these percentiles can reassure parents or indicate the need for further evaluation.
