Baby Percentile Calculator
Track your baby's growth with WHO growth standards for weight, height, and head circumference
Calculate Baby Growth Percentiles
Calculator works for babies 0-24 months
Example Calculations
Tommy - 14 Month Old Boy
Age: 14 months
Weight: 10.6 kg (50th percentile)
Height: 80 cm (50th percentile)
Head Circumference: 47.5 cm (50th percentile)
Assessment: Normal, consistent growth pattern
Samantha - 3 Month Old Girl
Age: 3 months
Weight: 7.3 kg (85th-97th percentile)
Height: 63 cm (85th-97th percentile)
Head Circumference: 41 cm (85th-97th percentile)
Assessment: Large but proportional, consistent with tall parents
About WHO Growth Charts
Global Standards
Based on healthy, breastfed infants worldwide
Age & Sex Specific
Separate charts for boys and girls
Track Trends
Monitor growth patterns over time
Measurement Tips
Weight
Weigh baby naked, same time daily
Length/Height
Measure lying down (under 2 years)
Head Circumference
Around largest part of head, above eyebrows
Consistency
Track patterns, not single measurements
Understanding Baby Growth Percentiles
What Are Percentiles?
Percentiles tell you how your baby compares to other babies of the same age and sex. If your baby is in the 50th percentile for weight, it means they weigh more than 50% of babies their age and sex.
Why Track Growth?
- •Monitor healthy development patterns
- •Identify potential growth concerns early
- •Track consistency across different measurements
- •Support pediatric health assessments
Red Flags to Watch For
🚩 Sudden Changes
Baby suddenly changes percentile patterns (up or down significantly)
🚩 Inconsistent Growth
Large differences between weight and height percentiles
🚩 Extreme Percentiles
Consistently below 3rd or above 97th percentile
Remember: Consistent tracking along any percentile curve is usually normal. It's the trend and pattern that matters most, not the specific percentile number.