Baby Weight Growth Chart

Parents often closely monitor their baby’s growth especially during the first year. While regular check-ups with your baby’s pediatrician will often tell you how healthy your baby has been growing, it doesn’t stop you from worrying about his or her development. With our online baby weight percentile calculator that’s based on the WHO baby growth chart, finding out how well your baby is faring compared to others of the same age is just a click away.

Baby's Birthday:
Baby's Gender:
Baby's Weight:
Baby's Birthday:
Baby's Gender:
Baby's Weight:  kg (2-30)

Background Information & Instructions

How to use our calculator: simply input your baby’s birthday, sex, and current weight then click on the calculate button.

Weighing Your Baby

Now, why do you need this calculator? Knowing that your baby is gaining weight as he or she is growing is very important to us moms. By using our baby weight percentile calculator, you can create your baby’s weight chart to see her weight gain and how well she is growing based on the WHO baby growth chart (http://www.cdc.gov/growthcharts/who_charts.htm).

This chart tells you your baby’s weight percentile (one of a baby’s growth percentiles). Now, what is this for? First, the percentile baby weight will tell you how your baby’s weight gain compares to national averages. For example, your baby has a 50% baby weight percentile. It means that 50% of babies, living in an optimal growth environment and are of the same age and sex as your baby, weigh the same or less than your baby.

In addition, you get to see if your baby is following a healthy weight gain pattern: does her weight percentile change radically or is it stable? If there are drastic changes in your baby’s weight percentile, you may want to bring it up with her pediatrician.

Comments (6)

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  1. huihui says:

    thanks nice website!

  2. Anon says:

    This chart is always different to what the docs tell us. Their numbers ALWAYS come in 10-15% higher. Why the diffs?

    • Anonymous says:

      The difference is because this is the world health organization, which is for breastfed babies, and your doctor might use the one by the US CDC or other pediatric charts, which are for breastfed and formula babies combined. Breastfed babies usually gain weight at a slower rate, so it’s okay.

      • Gaby says:

        This doesn’t make sense. A baby measured on US charts(formula + breastfed) will be relatively lower in percentiles vs the exact same baby with the same weight being measured on WHO charts. It should be the exact opposite of what you’re saying.

        Example:
        50th percentile on CDC charts = 16lbs(formula + breastfed)
        50th percentile on WHO charts = 14lbs (breastfed only)
        Baby’s weight = 14lbs, therefore baby is at the 50th percentile on WHO charts and at the 44th percentile on the CDC charts.

        OP is saying your chart reports weight 10-15% lower than US doctors, whereas you are saying it should be the other way around. Are you sure this isnt the CDC chart and US docs use the WHO chart?

  3. admin says:

    Thanks, I am glad you like it.

  4. Helen says:

    Thank you very much, this tool is very helpful. Now I can track my son’s growth and feeding him accordingly.