Know Your BMI

Your body mass index (BMI) is a comparison of your height and weight. Doctors use the BMI with other factors to identify patients who may be outside their ideal weight range.

Here’s how to compute it:
Step 1
Measure your height in meters.
Step 2
Weigh yourself in kilograms. This will allow you to calculate your BMI in metric units.
Step 3
Compute your BMI by dividing your weight by the square of your height. Ensure that you use your weight in kilograms and your height in meters so that your BMI is in units of kilograms per square meter (kg/m^2.)
Step 4
Classify your BMI if you're female. Your BMI indicates a normal weight if it's between 19.1 and 25.8. A BMI that's less than 19.1 is classified as underweight. A BMI that's between 25.8 and 27.3 is classified as marginally overweight. A BMI between 27.3 and 32.3 is classified as overweight, and a BMI greater than 32.3 is considered to be obese.
Step 5
Classify your BMI if you're male. Your BMI indicates a normal weight if it's between 20.7 and 26.4. A BMI that's less than 20.7 is classified as underweight. A BMI that's between 26.4 and 27.8 is classified as marginally overweight. A BMI between 27.8 and 31.1 is classified as overweight, and a BMI greater than 31.1 is considered to be obese.

…now you have an idea if you need to do some loosing or gaining weight