BMI Calculator
Work out your body mass index from your weight and height, see which range it falls in and your healthy weight range.
Daily LifeResult
Body mass index
22.9 kg/m²
- Category
- Normal weight
- Healthy weight range
- 125.3 – 168.6 lb
- Compared with the range
- Within the healthy range
How is it calculated?
Enter your weight and height (kilograms and centimetres, or pounds and inches). The tool calculates your BMI, says which range of the World Health Organization's adult scale it falls in and shows the healthy weight range for your height.
Formula
BMI = Weight (kg) ÷ Height (m)² Healthy range: BMI 18.5 – 24.9
Example
Units: Kilograms and centimetres · Weight: 70 · Height: 175 → Body mass index: 22.9 kg/m²
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Frequently asked questions
What is a normal BMI range?
By the World Health Organization's scale for adults, 18.5–24.9 is normal, 25–29.9 is overweight, 30 and above is obese and below 18.5 is underweight.
Does it apply to children and teenagers?
No. This scale is for adults over 18. For children and teenagers BMI is judged against age and sex percentile charts; ask a doctor.
Does BMI account for muscle and bone?
No. A very muscular person can have a high BMI, while low muscle mass in older people can hide behind a normal one. Waist size and overall health matter too.
Is this medical advice?
No. The result is general information; see a health professional for decisions about your weight.