WHO Infant Weight Chart

Reasons Why It’s Most Relevant

View infant weight chart by the World Health Organization and then use a quick link to WHO baby height weight percentile calculator to check for the optimal baby weight gain for your little boy or girl.

WHO Weight Standards For Infants 0-24 Months:

  • The World Health Organization, WHO standards, establishes the weight increase of the breast fed infant as the norm for weight.
  • Breast feeding is WHO’s recommended best standard for infant feeding.
  • WHO’s standards were constructed using length and weight data measured at frequent intervals starting from birth.
  • Infant weight charts by WHO reflect weight patterns among children who were predominantly breast fed for at least 4 months.
  • And then continued with extended breast feeding for 12 months.
  • Weight in infants who live in environments that support, what WHO researchers view as optimal weight growth in children.
  • Among children who were residing in six countries throughout the world including the USA.

The distribution among babies shows what infants and young children weigh under these good conditions.

Rather than how they weigh in environments that may not support optimal weight growth.


Baby Weight Chart
Infant Girls Age 0-2 Years


Relevant WHO Infant Weight Chart


WHO infant girl weight chart

  • 1 Kg equals 2,2 Pounds
  • The WHO standards provide a better description of physiological weight increase in infancy.


Baby Weight Chart
Infant Boys Age 0-2 Years


Relevant WHO Infant Weight Chart For Boys


WHO Infant boy weight chart

  • 1 Kg Equals 2,2 Pounds
  • The WHO weight growth charts are standards.
  • WHO identifies its standards as based on a high-quality study designed for creating weight charts.
  • The charts show how much babies should weigh when provided optimal conditions: breast feeding and a safe environment.


Recommendation By
The World Health Organization:


  • It’s best to use the WHO weight-growth standards to monitor weight increase in infants 0-2 years of age in the U.S and other countries.

Ask your pediatrician to use WHO charts for your baby’s development, even if you are not breast feeding your baby, you will see his weight percentiles, compared to those who were breast fed.

For your baby’s growth spurts times visit infants growing in spurts.

Acknowledgment and Reference: WHO, The World Health Organization.

The WHO Weight For Age Weight Calculator

To Open the Weight Calculator:
“Click On This Link”

It’s easy. Just follow the simple instructions and enter your baby’s weight in the Units of kg or pound and get the result in seconds!


Description For Weight Percentile Chart

The chart provides your baby’s weight percentile based on age.

The percentile shows how your infant’s weight compares to other infants in the USA.

It shows you what percentage of babies weigh less than your baby.

For example out of a sample of 100 babies, a percentile value of 40 percent, means your baby weighs more than 40 babies and weighs less than the other 60 babies.

A percentile of 50% represents the average or maine weight. A value below 50 percent means a baby weighs less than the average.

A value greater than 50 percent means a baby is above average. This does not mean your baby is overweight or underweight.

A doctor or physician should be consulted to determine weight status.

Weight Calculator Instructions

The calculator requires gender (male or female), birth date of child and weight to be entered.


1. Select Gender

Male for boys

Female for girls

2. Enter Birthday

The date the baby was born. Select the field to pull up a calendar or use the up and down arrows to increment or decrement by days.

3. Enter Weight

Enter the weight of the infant. Note, the units tabs allows the change or selection of pounds (standard) or kilograms ( metric).

4. Press Calculate button

This is only needed to when the weight is manually entered.


Parameter Notes

1. Percentile

Calculated using standard normal distribution

2. Age

Age of child in years, months and days.

3. Weight

Weight of the baby in metric units of kilograms.

4. Graph Plot

Weight versus age graph with 5, 10, 25, 50, 75, 95 and calculated percentile lines.

Acknowledgement and Reference: CDC, US Centers for Disease Control and Prevention.

Return From Infant Weight Chart To Infant Growth Chart

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