Bmi formula nhsmail

The BMI (Body Mass Index) formula is a widely used indicator of body fat based on height and weight. The formula is:

BMI = weight (in kg) / height (in meters)²

In the UK, the National Health Service (NHS) uses the following BMI categories:

Here's the formula in more detail:

  1. Convert your weight from pounds to kilograms: weight (in kg) = weight (in pounds) / 2.20462
  2. Convert your height from inches to meters: height (in meters) = height (in inches) / 39.37
  3. Square your height in meters: height² = height (in meters)²
  4. Divide your weight in kilograms by your height squared: BMI = weight (in kg) / height²

For example, let's say you weigh 70 kg and are 1.65 meters tall:

  1. Convert weight to kg: 70 pounds / 2.20462 = 31.76 kg
  2. Convert height to meters: 65 inches / 39.37 = 1.65 meters
  3. Square height: 1.65² = 2.7225
  4. Calculate BMI: BMI = 31.76 kg / 2.7225 = 11.7

According to the NHS BMI categories, a BMI of 11.7 falls into the "normal weight" category.

Remember that BMI is not a perfect measure of health, as it does not take into account muscle mass or body composition. However, it can provide a general indication of whether your weight is in a healthy range for your height.