Children's health tools
Free, private tools for babies and children — from birth to 18. Track growth percentiles, BMI-for-age and more using official WHO and CDC standards. Part of the checkit.health Children’s Health Centre.
Free · no account needed · private by design
Child Growth Percentile Calculator
WHO/CDC weight, height & head-circumference percentiles for babies and children.
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Baby Weight Percentile
Where your baby’s weight sits on WHO/CDC charts, from birth.
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Baby Height / Length Percentile
Your baby’s length/height percentile on WHO/CDC charts.
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Baby Head Circumference Percentile
Track head-circumference percentile — a key early-development marker.
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Child BMI Calculator
BMI-for-age percentile for children and teens (2–18 years).
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Child Height Predictor
Predict a child’s adult height from the parents’ heights.
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