Baby Growth Percentile Calculator (WHO Data)

Curious how your baby’s growth compares to global standards? Use our WHO-based Baby Growth Percentile Calculator to instantly check weight, height, and head circumference percentiles.

Track Your Baby’s Development Over Time

Monitoring percentiles can help you understand if your baby is growing steadily, identify growth spurts or slowdowns, and guide conversations with your pediatrician. This tool gives you clear insight into how your little one stacks up against international growth charts.

Ready to plan your baby's BLW journey?

Whether you’re keeping tabs between pediatric checkups or just curious, this tool is here to help you feel confident and informed.

Create a Free Account

How It Works

Based on World Health Organization (WHO) data for babies 0–24 months
Works with both metric (kg/cm) and imperial (lbs/in) units
Provides percentile results for weight, height/length, and head circumference
No login required — calculate instantly

Why Percentiles Matter

Percentiles show how your baby compares to other children of the same age and sex. A 50th percentile means average — your baby is right in the middle. Higher or lower scores don’t necessarily mean anything is wrong, but consistent tracking can reveal helpful patterns.

Frequently Asked Questions

How is the baby percentile calculated?

Percentiles compare your baby's growth to a reference population. This tool uses **LMS values from WHO data** to determine percentiles for weight, height, and head circumference.

What does a percentile mean?

If your baby's weight percentile is **60%**, it means they are heavier than **60% of babies** of the same age and gender.