Loading…
Loading…
KidBMI
BMI for kids and teens, with a reminder to check age-specific percentiles.
A growing child's healthy BMI shifts constantly with age and sex — pediatricians use percentile charts that compare a child to others their exact age, rather than the fixed adult 18.5–24.9 healthy range.
This calculator gives the raw BMI number, but interpreting it for a child always requires comparing against age-specific CDC growth charts — a pediatrician is the right resource for any real concern.
Daily energy expenditure with personalised macro splits.
OpenBody mass index with healthy-range guidance.
OpenUS Navy circumference method for body fat percentage.
OpenDaily hydration target based on weight, activity, and climate.
OpenBMI
17.752
For children, always compare against age-specific CDC percentile charts.
What you entered
Convert height to metres
h = 130 cm ÷ 100= 1.30 mSquare the height
h² = 1.30²= 1.6900 m²Divide weight by height²
BMI = 30 kg ÷ 1.6900 m²= 17.8Compare to WHO ranges
Underweight <18.5 · Healthy 18.5–24.9 · Overweight 25–29.9 · Obese 30+= UnderweightResult
BMI: 17.752
At 30 kg and 130 cm (age 10), BMI is 17.8 on the adult scale — always cross-check against age-specific CDC percentile charts for children.