Everyday numbers, solved
Calculate body mass index using feet, inches, and pounds or centimeters and kilograms, with the standard BMI category range.
Health
Calculate BMI using US or metric measurements.
Your BMI
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BMI is a screening measure, not a diagnosis. It may not reflect body composition and is not appropriate for every person.
How it works
Quick answer: Body mass index is weight divided by height squared. A person who is 5 ft 10 in and 170 lb has a BMI of 24.4, which is in the Healthy range (18.5 to 24.9).
BMI = 703 × weight (lb) ÷ height (in)²
BMI = weight (kg) ÷ height (m)²Adult categories: under 18.5 below range, 18.5 to 24.9 healthy, 25 to 29.9 above range, 30 or more high.
Height 5 ft 10 in (70 in), weight 170 lb: 703 × 170 ÷ 70² = 24.4, category: Healthy range.
| Weight | BMI | Category | Open |
|---|---|---|---|
| 130 lb | 18.7 | Healthy range | Open |
| 150 lb | 21.5 | Healthy range | Open |
| 170 lb | 24.4 | Healthy range | Open |
| 190 lb | 27.3 | Above range | Open |
| 210 lb | 30.1 | High range | Open |
| 230 lb | 33.0 | High range | Open |
18.5 to 24.9 is the standard healthy range for adults.
No, it is a screening ratio; muscle mass and body composition affect what it means.
Not always. Muscular people can have a high BMI with low body fat. A waist measurement or body fat estimate adds context.