Description:
This calculator provides your baby's weight percentile based
on age. The percentile shows how your infant's weight compares
to other infants. The percentile tells 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 mean 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.
Instructions:
The calculator requires gender (male or female), birth date
of child and weight to entered.
Inputs:
Step
Instructions
Notes
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.
Outputs:
Output
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.
Reference:
Centers for Disease Control and Prevention (CDC). National
Center for Health Statistics (NCHS). National Health and
Nutrition Examination Survey Data. Hyattsville, MD: U.S.
Department of Health and Human Services, Centers for Disease
Control and Prevention, 2008 http://www.cdc.gov/growthcharts/.
