ReviewIt.pk — Baby Health

Baby Weight
Percentile Calculator

Find out if your baby's weight is healthy using the official WHO growth charts. Works for boys and girls aged 0 to 24 months.

WHO Growth Charts
Boys and Girls
0 to 24 Months
Free and Private
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Enter Baby's Details

We use the WHO Child Growth Standards to calculate percentile

0 to 24 months (enter 0 for newborn)
Enter weight in kilograms
Weight in pounds? Divide by 2.205 to get kg. E.g. 16.5 lbs = 7.5 kg.
WHO Growth Chart — Weight for Age
50th (median)
25th & 75th
3rd & 97th
Your baby
Understanding Percentiles
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Below 3rd percentile
Underweight — speak to your paediatrician as soon as possible.
🔶
3rd to 15th percentile
Below average — monitor closely and discuss with your doctor.
15th to 85th percentile
Healthy normal range — your baby is growing well.
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85th to 97th percentile
Above average — may indicate overweight, discuss with doctor.
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Above 97th percentile
Overweight — consult your paediatrician for guidance.
WHO Reference Weights — Girls
Frequently Asked Questions

How Baby Weight Percentile Works

The baby weight percentile tells you how your baby's weight compares to other babies of the same age and gender. A percentile of 50 means your baby weighs more than 50% of babies their age — exactly in the middle. A percentile of 25 means your baby weighs more than 25% of babies their age.

This calculator uses the WHO Child Growth Standards — the global reference used by paediatricians worldwide including in Pakistan. The WHO charts are based on data from healthy breastfed children in six countries and represent optimal growth under ideal conditions.

For Pakistani parents: Many Pakistani babies are naturally smaller than the WHO average due to genetic factors. A baby consistently between the 10th and 90th percentile and following their own growth curve is generally healthy. What matters most is consistent growth over time — not a single reading. Always discuss any concerns with your paediatrician at your local hospital or BHU.