BMI of a 160 cm, 51 kilogram person

What is the BMI of a man or woman who weighs 51 kilos and is 160 centimeters tall?
cm
kg
BMI = 19.92
Note: BMI is the same for men and women.

Am I Overweight?

Here are the BMI standards as set by the World Heath Organization:

BMICategory
< 18.5Underweight
18.5 - 25Healthy Weight
25 - 30Overweight
> 30Obese

In the United States, the average BMI for adults is 28.8.

BMI Formula

Metric
BMI = kg / m2

Imperial
BMI = (lbs * 0.45359237) / (inches * 0.0254)2

Simplified
BMI = 703 * lbs / inches2

Is BMI Worth Using?

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.

Body fat estimates for a person with a BMI of 19.92
These are rough estimates based on a formula, and do not reflect differences in muscularity, body types, etc...
Age Male Female
18 11.8% 22.6%
19 12.1% 22.9%
20 12.3% 23.1%
21 12.5% 23.3%
22 12.8% 23.6%
23 13.0% 23.8%
24 13.2% 24.0%
25 13.5% 24.3%
26 13.7% 24.5%
27 13.9% 24.7%
Age Male Female
28 14.1% 24.9%
29 14.4% 25.2%
30 14.6% 25.4%
31 14.8% 25.6%
32 15.1% 25.9%
33 15.3% 26.1%
34 15.5% 26.3%
35 15.8% 26.6%
36 16.0% 26.8%
37 16.2% 27.0%
Age Male Female
38 16.4% 27.2%
39 16.7% 27.5%
40 16.9% 27.7%
41 17.1% 27.9%
42 17.4% 28.2%
43 17.6% 28.4%
44 17.8% 28.6%
45 18.1% 28.9%
46 18.3% 29.1%
47 18.5% 29.3%
Age Male Female
48 18.7% 29.5%
49 19.0% 29.8%
50 19.2% 30.0%
51 19.4% 30.2%
52 19.7% 30.5%
53 19.9% 30.7%
54 20.1% 30.9%
55 20.4% 31.2%