Weight Percentile Calculator
Calculate weight percentiles for children using WHO growth standards
Calculate Child Weight Percentile
Calculator works for children 0-20 years old
Weigh child without clothes for accuracy
Example Calculations
Healthy Weight Example
Child: 5-month-old boy
Weight: 8.0 kg
Result: 50th - 85th percentile (Average Weight)
Interpretation: Normal weight gain pattern, continue current feeding practices
Growth Monitoring Example
Child: 3-year-old girl
Weight: 15.5 kg
Result: 75th - 85th percentile (Above Average)
Interpretation: Slightly above average but within healthy range
Concern Example
Child: 18-month-old boy
Weight: 8.5 kg
Result: Below 3rd percentile (Significantly Underweight)
Interpretation: Requires immediate pediatric evaluation for potential causes
Weight Classifications
Significantly Underweight
< 3rd percentile
Underweight
3rd - 10th percentile
Below Average
10th - 25th percentile
Average Weight
25th - 75th percentile
Above Average
75th - 85th percentile
Overweight
85th - 97th percentile
Significantly Overweight
> 97th percentile
Weight Influencing Factors
Feeding Patterns
Breastfeeding vs formula, introduction of solids
Genetics
Family history of body size and metabolism
Activity Level
Physical activity and movement patterns
Health Conditions
Medical conditions affecting weight gain
Sleep Quality
Sleep duration and quality affect metabolism
Understanding Weight Percentiles
What Are Weight Percentiles?
Weight percentiles compare your child's weight to thousands of other children of the same age and sex. They are based on WHO (World Health Organization) growth standards and help healthcare providers assess whether a child's weight is appropriate for their age.
Growth Tracking Principles
- •Children should typically follow their own growth curve over time
- •Consistent percentile tracking is more important than the specific number
- •Weight gain patterns vary during different developmental phases
- •Rapid weight changes may indicate feeding or health issues
When to Seek Medical Guidance
Urgent Consultation
Weight below 3rd percentile or rapid weight loss
Growth Concerns
Crossing two or more percentile lines up or down
Feeding Issues
Poor appetite, feeding difficulties, or excessive weight gain
Remember: Weight percentiles are population-based comparisons. A healthy child can be at any percentile as long as they're growing consistently along their own curve and meeting developmental milestones.