1. Calculation and classification of BMI (adults)
Formula: BMI = body weight (kg) / [height (m)]²
Classifications:
Underweight: < 18.5
Normal range: 18.5 – 24.9
Overweight: 25 – 29.9
Obesity: ≥ 30
2. The “Ideal” or Healthy Weight Range for Height
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Healthy
Health
This range typically corresponds to a BMI of 18.5 to 24.9.
Height (cm) Healthy Weight Range (kg) Average BMI Range (~21.7)
150 42 – 56 51
155 45 – 59 54
160 47 – 64 57
165 50 – 68 60
170 53 – 72 64
175 56 – 76 68
180 59 – 81 71
185 63 – 86 75
