Power Calculators

📏 Baby & Child Growth Charts

12 calculators in this category.

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Check where your child sits on the growth charts used by paediatricians: weight, length or height, head size and BMI for age, from birth to 19–20 years. Premature babies are assessed by corrected age up to 2 years.

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Weight Percentile
Find your baby's or child's weight-for-age percentile on the WHO or CDC growth chart (birth to 20 years), with the z-score, the normal weight range for the age and corrected age for premature babies.
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Height Percentile
Find your baby's length or child's height percentile for age on WHO or CDC growth charts (birth to 20 years), with z-score, median height and the normal range.
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Head Size Percentile
Check your baby's head circumference (head size) percentile for age on the WHO (birth–5 years) or CDC (birth–3 years) chart, with z-score and normal range.
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Child BMI
Calculate BMI for children and teenagers (2–19 years) and see the BMI-for-age percentile and weight category on the CDC or WHO chart, with the healthy weight range for the child's height.
★ 5.0 (1)
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Height Predictor
Predict how tall your child will be as an adult from the parents' heights (mid-parental method) and, if you add your child's current height and age, from their height percentile.
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Corrected Age
Work out a premature baby's corrected (adjusted) age from the date of birth and weeks of pregnancy at birth, with the original due date and expected milestone dates.
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Newborn Weight
Calculate a newborn's weight loss or gain as a percentage of birth weight, check whether it is normal (under 7–10%), and see expected weekly weight gain.
★ 5.0 (1)
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Baby Age
Find exactly how old your baby is in weeks, months and days from the date of birth, plus the dates of upcoming milestones like 100 days and the first birthday.
📊
Weight for Length
Check whether a baby or young child is a healthy weight for their length or height on the WHO weight-for-length chart, with percentile, z-score and wasting or overweight classification.
💪
MUAC
Check for malnutrition from mid-upper arm circumference (MUAC): red, yellow or green band for children 6–59 months, older children and pregnant women, using WHO/UNICEF cut-offs.
★ 5.0 (1)
📈
Growth Rate
Calculate your child's growth rate (height velocity) in cm per year from two height measurements, and compare it with the normal growth rate for their age.
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Weight Gain
Check whether your baby is gaining enough weight: compare the current weight with the weight expected on the same WHO percentile as at birth, with grams per day.

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