Weight Percentile Calculator
A quick growth check based on World Health Organization (WHO) standards.
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Growth tool for parents
Enter your child's age, gender and weight in kilograms to estimate their weight percentile compared with children of the same age and gender. The result can help you understand a weight measurement as part of growth tracking, but it does not replace medical advice.
For more consistent tracking, try to weigh your child the same way each time. For babies, it is best to weigh without heavy clothing and under similar conditions.
A quick growth check based on World Health Organization (WHO) standards.
A weight percentile compares your child's weight with other children of the same age and gender. For example, the 50th percentile is roughly in the middle of the range, while the 85th percentile means the child weighs more than most children of the same age and gender.
A low or high percentile is not automatically a sign of a problem. It is important to read the result together with height, BMI, nutrition, earlier measurements and the child's growth pattern over time.
To get the most useful estimate, enter the information in this simple order:
Select boy or girl because growth charts differ by gender.
Use either the date of birth or the manual age fields.
Weight should be entered in kilograms and measured consistently.
The calculator shows a percentile and a short explanation, not a diagnosis.
In many cases, children between the 3rd and 97th percentiles are within the common population range. Still, weight should be interpreted together with height, BMI, nutrition and the overall growth trend.
| Weight percentile | General interpretation |
|---|---|
| Below the 3rd percentile | Very low compared with age and gender. It is worth consulting a pediatrician. |
| 3rd-15th percentile | Relatively low, but it may be normal depending on the child's full growth picture. |
| 15th-85th percentile | A common range for many children. |
| 85th-97th percentile | Relatively high for age and gender. It should be read together with height. |
| Above the 97th percentile | Very high compared with age and gender. It is useful to also review BMI and growth trend. |
Weight alone does not tell the whole story. A tall child may weigh more and still be following a healthy growth path, while a shorter child may appear to have a high weight percentile even though the broader height-to-weight picture needs review. That is why it can help to also check the height percentile calculator.
If there is a sharp change in percentiles or a clear gap between weight and height, consider consulting a pediatrician or pediatric dietitian.
For babies, it is best to weigh without heavy clothing, ideally on the same scale and under similar conditions. For older children, try weighing at a similar time of day, without shoes and with light clothing. Consistency matters more than a single measurement.
Medical advice is recommended if weight is below the 3rd percentile, if there is a sharp drop in percentiles, if weight rises very quickly over time, or if there are feeding difficulties, repeated vomiting, diarrhea, significant constipation, poor appetite, unusual tiredness or developmental delay.
Weight is an important measure, but it is only one part of the broader picture. Nutrition, appetite, activity, height, sleep and overall development all affect how a child grows. If your child is a baby or is starting solid foods, you can also read KidGil's baby nutrition guide.
Keep building the full picture
A weight percentile is a helpful starting point, but growth is a broader story. These tools and pages can help connect weight, height, BMI and nutrition.
Questions parents actually ask
Short answers to help you read the result calmly, without turning one number into a diagnosis.
A weight percentile shows where your child's weight falls compared with other children of the same age and gender. For example, the 40th percentile means that about 40 out of 100 children are expected to weigh less, and about 60 to weigh more.
There is no single percentile that is normal for everyone. In many cases, percentiles between 3 and 97 are common in the population, but it is important to consider height, BMI, nutrition and the growth trend.
Not necessarily. Some healthy children naturally track lower percentiles. However, a very low percentile, a steady drop or feeding difficulties justify speaking with a pediatrician.
Not necessarily. A high weight percentile should be interpreted together with height, BMI, body build and growth trend. It is not useful to draw conclusions from one weight measurement alone.
Yes, if the calculator's age range includes babies. For babies, consistent weighing is especially important, and results should be interpreted together with routine well-baby clinic or pediatrician follow-up.
No. The calculator is intended for general information and initial understanding only. It does not replace medical advice, diagnosis or follow-up with a pediatrician, well-baby clinic or pediatric dietitian.
The calculation is based on accepted growth charts by age and gender, including WHO curves for early childhood and CDC curves for older children, according to the calculator's data range. The information on this page is for general guidance only and does not replace personal medical advice, diagnosis or follow-up with a pediatrician, well-baby clinic or pediatric dietitian.
פתחו חשבון חינם כדי לשמור את הנתונים, לעקוב אחרי שינויים ולקבל היסטוריה מסודרת של המדידות.
הנתונים שכבר הזנתם לא יאבדו.
מצאנו יותר מילד אחד שמתאים לפרופיל. בחרו את הילד הנכון או צרו ילד חדש.
המדידה שכבר הזנתם שמורה, ותתווסף אוטומטית אחרי השלמת ההרשמה או ההתחברות.