Here are the BMI standards as set by the World Heath Organization:
BMI | Category |
---|---|
< 18.5 | Underweight |
18.5 - 25 | Healthy Weight |
25 - 30 | Overweight |
> 30 | Obese |
In the United States, the average BMI for adults is 28.8.
Metric
BMI = kg / m2
Imperial
BMI = (lbs * 0.45359237) / (inches * 0.0254)2
Simplified
BMI = 703 * lbs / inches2
Body Mass Index is a very simplistic method of determining whether a person is overweight. It does not taken into account a person's frame, gender, or muscularity. Furthermore, at least one study has suggested that slightly overweight people may live longer than people in the "normal" range.
Nevertheless, BMI is highly correlated with body fat % and is a decent enough yardstick of a healthy weight.
Age | Male | Female |
---|---|---|
18 | 17.5% | 28.3% |
19 | 17.8% | 28.6% |
20 | 18.0% | 28.8% |
21 | 18.2% | 29.0% |
22 | 18.5% | 29.3% |
23 | 18.7% | 29.5% |
24 | 18.9% | 29.7% |
25 | 19.1% | 29.9% |
26 | 19.4% | 30.2% |
27 | 19.6% | 30.4% |
28 | 19.8% | 30.6% |
29 | 20.1% | 30.9% |
30 | 20.3% | 31.1% |
Age | Male | Female |
---|---|---|
31 | 20.5% | 31.3% |
32 | 20.8% | 31.6% |
33 | 21.0% | 31.8% |
34 | 21.2% | 32.0% |
35 | 21.4% | 32.2% |
36 | 21.7% | 32.5% |
37 | 21.9% | 32.7% |
38 | 22.1% | 32.9% |
39 | 22.4% | 33.2% |
40 | 22.6% | 33.4% |
41 | 22.8% | 33.6% |
42 | 23.1% | 33.9% |
43 | 23.3% | 34.1% |
Age | Male | Female |
---|---|---|
44 | 23.5% | 34.3% |
45 | 23.7% | 34.5% |
46 | 24.0% | 34.8% |
47 | 24.2% | 35.0% |
48 | 24.4% | 35.2% |
49 | 24.7% | 35.5% |
50 | 24.9% | 35.7% |
51 | 25.1% | 35.9% |
52 | 25.4% | 36.2% |
53 | 25.6% | 36.4% |
54 | 25.8% | 36.6% |
55 | 26.0% | 36.8% |