Baby Size Calculator
Calculate your baby’s growth percentiles, estimate clothing sizes, and track development milestones from newborn to toddler age.
Step 1: Baby Information
Growth Standards
Calculations based on WHO growth standards for infants and children. Percentiles show how your baby compares to others of the same age and gender.
Step 2: Calculations & Estimates
Growth Percentiles
A percentile shows how your baby compares to others. 50th percentile means average – half of babies are smaller, half are larger.
Baby Growth Analysis
Overall Growth Percentile
Growth Percentile Chart
Growth Interpretation
Understanding Percentiles
Percentiles show how your baby compares to others of the same age and gender. The 50th percentile is average. Consistent growth along any percentile line is typically healthy.
| Age | Weight (lbs) | Length (in) | Percentile | Status |
|---|
Clothing Size Recommendations
| Size | Weight Range | Length Range | Age Range | Fit Status |
|---|
Clothing Fit Tips
Babies grow quickly! Consider buying slightly larger sizes, especially for seasons. Weight is often a better indicator than age for clothing size.
Need Pediatric Advice?
Connect with our pediatric experts for personalized growth assessments, nutritional guidance, and developmental milestone tracking for your baby.
Consult Pediatric Expert