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Child Development Calculators

Growth charts, developmental milestones, height velocity, and bone age

13 calculators
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Pediatric BMI Percentile Calculator

Calculates BMI-for-age percentile for children and adolescents (2-20 years) using CDC 2000 growth charts to assess weight status.

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Bone Age Assessment Calculator

Estimates skeletal maturity (bone age) from a left hand/wrist radiograph using the Greulich-Pyle or Tanner-Whitehouse methods, comparing to chronological age.

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Developmental Milestones Checklist

Checklist of key developmental milestones by age from 2 months to 5 years based on CDC Learn the Signs. Act Early. program.

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Head Circumference Percentile Calculator

Calculates head circumference-for-age percentile for infants and children using CDC or WHO growth charts to assess brain growth and detect macro/microcephaly.

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Height-for-Age Percentile Calculator

Calculates height/stature-for-age percentile for children using CDC 2000 or WHO growth charts to assess linear growth.

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Height Velocity Calculator

Calculates annual height velocity (cm/year) from two measurements and compares to age- and sex-specific reference ranges.

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Pediatric Maintenance Fluid Calculator (Holliday-Segar)

Calculates daily and hourly maintenance intravenous fluid requirements for children using the Holliday-Segar method.

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Mid-Parental Target Height Predictor

Calculates a child's target (genetic) adult height based on parental heights using the Tanner formula and modern regression methods.

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Neonatal Jaundice Bilirubin Risk Nomogram

Determines phototherapy and exchange transfusion thresholds for neonatal hyperbilirubinemia based on AAP 2004 or 2022 guidelines.

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Predicted Adult Height - Bayley-Pinneau Method

Predicts adult height based on current height, chronological age, and bone age using the Bayley-Pinneau method.

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Tanner Pubertal Staging Criteria

Clinical reference for Tanner pubertal staging (breast/genital development and pubic hair) for boys and girls with associated height velocity guidance.

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Weight-for-Age Percentile Calculator

Calculates weight-for-age percentile for children using CDC or WHO growth charts to assess nutritional status.

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Weight-for-Length Percentile Calculator (0-2 years)

Calculates weight-for-length/height percentile for infants 0-2 years using WHO MGRS growth charts to assess body proportion.

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⚠️ Medical Disclaimer: All calculators on this site are for educational and clinical decision-support purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment. Always verify calculations independently and exercise clinical judgment.