Baby Growth Percentile Calculator
Track your infant's growth and development using WHO growth standards. This calculator helps you determine your baby's percentiles for weight, length/height, and head circumference.
Growth Percentiles Results
Understanding Baby Growth Percentiles
Baby growth percentiles are essential tools for healthcare providers and parents to monitor infant growth and development. These percentiles compare your baby's measurements to those of other children of the same age and gender, using standardized growth charts developed by the World Health Organization (WHO).
What Do Percentiles Mean?
A percentile indicates the relative position of your child's measurement among children of the same age and gender. For example, if your baby's weight is at the 75th percentile, it means that 75% of babies of the same age and gender weigh less, and 25% weigh more.
Key Measurements Tracked
- Weight: Indicates overall growth and nutrition status
- Length/Height: Shows skeletal growth and development
- Head Circumference: Reflects brain growth and development
Normal Range of Percentiles
It's important to understand that there is no "ideal" percentile. A healthy baby can be at any percentile, as long as they maintain consistent growth over time. What's most important is the growth pattern, not the absolute percentile values.
| Percentile Range | Interpretation |
|---|---|
| Below 3rd | May require further evaluation |
| 3rd to 97th | Normal range |
| Above 97th | May require further evaluation |
When to Be Concerned
While variations in growth are normal, certain patterns may require medical attention:
- Significant changes in percentile lines across multiple measurements
- Measurements consistently below the 3rd or above the 97th percentile
- Crossing two or more major percentile lines in either direction
- Disproportionate growth between different measurements
Factors Affecting Growth
Several factors can influence your baby's growth:
- Genetic factors
- Nutrition and feeding practices
- Overall health status
- Environmental factors
- Sleep patterns
- Physical activity levels
Using This Calculator
To get accurate results:
- Enter your baby's exact age in months (can use decimals for partial months)
- Select the correct gender
- Input precise measurements in the specified units
- Ensure measurements are taken correctly using standard techniques
- Track measurements over time to establish growth patterns
Note: This calculator uses the WHO Child Growth Standards, which are based on healthy children from around the world who were predominantly breastfed for at least 4 months and were still breastfeeding at 12 months.