⚠️ Medical Disclaimer: These tools are for educational purposes only and are not medical advice. Please consult your pediatrician or healthcare provider for any health concerns.
Free Tool

Baby Growth Percentile Tracker

Compare your baby's weight and height against WHO international growth standards. Covers 0 to 24 months with separate charts for boys and girls.

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Baby growth tracking helps you and your pediatrician spot patterns early. The AAP recommends regular weight checks at well-baby visits (2 weeks, 1 month, 2 months, 4 months, 6 months, 9 months, 12 months). Your tracker complements your pediatricians chart. We use WHO growth standards (under 2 years) and CDC growth charts (2 years and up), aligned with AAP guidance.

📊 Baby Growth Percentile Tracker

WHO growth standards for boys and girls aged 0 to 24 months

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Height
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About this tool

This tracker uses World Health Organization (WHO) Child Growth Standards data. Percentiles compare your baby with other healthy babies of the same age and gender worldwide.

This is a screening tool only. Always consult your pediatrician for accurate growth assessment and medical advice.

Step-by-Step Guide

How to use this tool

Use this at every paediatrician visit. Takes under 30 seconds to see your baby's growth percentile.

  1. 1
    Select your baby's gender

    WHO has separate standards for boys and girls. They grow at different rates.

  2. 2
    Enter age in completed months

    For 3 months and 20 days, enter 3. For under 1 month, enter 0.

  3. 3
    Enter weight in kilograms

    Weigh just before a feed. Enter to one decimal place (e.g., 7.2 kg).

  4. 4
    Enter height and click Calculate

    Babies under 2 are measured lying down. Your percentile appears instantly.

💡 Track the TREND not just one number

A baby consistently on the 25th percentile is perfectly healthy. Watch for sudden drops between visits.

⚠️ When to consult your paediatrician

If weight or height falls below the 3rd percentile or above the 97th, or there is a sudden significant drop, see your paediatrician.

FAQ

Frequently Asked Questions

If your baby is at the 60th percentile, they weigh more than 60% of babies their age. Healthy babies can be anywhere from the 3rd to the 97th percentile.
Not at all. Concern arises when a baby drops significantly from their established percentile, not just when they are at a lower percentile.
Use corrected age. Actual age minus weeks premature. If baby is 4 months but born 8 weeks early, enter 2 months. Continue correcting until 2 years old.
Small differences occur due to rounding. If the difference is more than 5-10 percentile points, check that you entered the same values.
Healthcare in USA

How baby growth and percentile tracking care actually works in the United States

Pediatric care in America has too many decision points. Most parents do not realize this until midnight on a Tuesday. Your pediatrician handles routine stuff. After hours though, you have options to sort through. Nurse triage line that comes with your pediatric practice, free. Telehealth like Teladoc or Amwell, usually a small copay through insurance. Urgent care clinics, the CVS MinuteClinic and Walgreens Healthcare type places, around $100 to $150 cash. ER for actual emergencies, anywhere from $500 to $3000 even with insurance. Choice depends on baby age, severity of what is going on, and your insurance situation. Under 3 months with any fever (100.4 Fahrenheit, 38 Celsius), skip the decision tree completely. Go straight to ER. AAP is firm on that one.

📞 Emergency contacts in the United States

For emergencies in the US: call 911. For non-emergency advice, call your pediatrician or the Poison Control Center at 1-800-222-1222 if you suspect a medication issue. Telehealth services like Teladoc, Amwell, and MDLive offer 24/7 pediatric consultations covered by most insurance plans.

Context for American families

What American moms actually deal with

American parents get conflicting advice from every direction. Wellness industry says lavender oil for everything. Some of those oils are actually unsafe for babies under 2 years old. Online mom forums swing from "every fever is fine, just wait it out" to "rush to the ER right now." Pediatricians want measured responses based on evidence. Insurance companies want you to call the nurse line first. None of these voices is entirely wrong. Just incomplete. AAP guidance is consistent and worth trusting more than Instagram momfluencers. For babies over 3 months, watchful waiting with Tylenol or Motrin and good hydration is fine for 24 to 48 hours unless something concerning develops. Under 3 months, any fever is an ER visit. No exceptions, no waiting it out.

More FAQs for USA

American-specific questions

The AAP recommends WHO standards under 2 years and CDC standards 2-20 years. Most American pediatricians follow this. Some pediatricians still use older CDC charts for under-2s, which give slightly different curves. WHO standards are based on healthy breastfed babies internationally and are considered the gold standard. Ask your pediatrician which they use.
Breastfed babies typically gain weight rapidly the first 3 months, then slow down. Formula-fed babies gain more steadily. WHO charts (based on breastfed babies) account for this. Older CDC charts (based on mostly formula-fed babies from the 1970s-80s) can falsely suggest breastfed babies are underweight after 6 months. Always use WHO under 2 years.
Crossing 2 major percentile bands (e.g. 75th to 25th) over a few months warrants discussion with your pediatrician. Single dips are usually fine. The AAP looks at trend over multiple data points, not single measurements. Bring your tracker data to appointments for context.
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