Tools you might need next
Calculate weight-based medication doses in mg and mL. Enter patient weight, dose per kg, and concentration for pediatric and adult nursing dose calculations.
Free BMI calculator for adults using WHO standards. Enter height and weight in metric or imperial units to get your BMI score and weight category instantly.
Calculate ideal body weight using Devine formula. Get healthy weight range based on height and gender. Free online calculator with instant browser-based
Same formula as adults. In US clinical practice, weight in kg divided by height in meters squared.
BMI = Weight (kg) ÷ Height (m)²Percentile determined from CDC 2000 growth reference using LMS method — not fixed adult cutoffs.
Percentile = Lookup(BMI, Age, Sex) on CDC LMS tablesCDC definitions for children 2–19 years. Under 2 years: use WHO weight-for-length charts, not BMI.
<5th: underweight; 5–85th: healthy; 85–95th: overweight; ≥95th: obesityUpdated: July 2026
BMI 22 at age 10 male ≈ 95th percentile — obesity category. Refer for comprehensive assessment, not diet alone.
75th percentile is within healthy range (5th–85th). Track trend over time, not single measurement.
BMI may overclassify muscular teens. Consider additional assessment — BMI is screening tool, not diagnostic.
Screen weight status in children and adolescents using BMI-for-age percentiles, not adult BMI categories. Enter age, sex, height, and weight to calculate BMI and approximate percentile classification per CDC growth standards.