BMI Calculator
Free BMI calculator for adults: enter height and weight to calculate body mass index, WHO category and healthy weight range.
Health calculators
Check weight and height: values must be realistic.
BMI0
Category-
Healthy weight0 kg
Comment-
Underweight< 18.5
Normal weight18.5-24.9
Overweight25-29.9
Obesity30+
BMI is a screening tool, not a diagnosis. It does not account for muscle mass, pregnancy, age-specific pediatric charts or medical history.
BMI formula
Body mass index is weight divided by height squared: BMI = kg / m². For 70 kg and 170 cm, BMI is about 24.2.
WHO categories for adults
- Underweight: BMI below 18.5.
- Normal weight: BMI from 18.5 to 24.9.
- Overweight: BMI from 25 to 29.9.
- Obesity: BMI 30 or higher.
