Calculating you (BMI) Body mass index and your (BMR) Basal metabolic rate, written by Lis Thorolvsen

How to calculate you health profile

Your body mass index also known as your BMI will give you a good indication if you are overweight or underweight as per the BMI numbers and if you further statistically  are in a range group for possible risks associated with too little or too much body fat.

Healthy weight is defined according to the body mass index, which is calculated as a ratio of weight to height by taking your weight in kilograms and dividing it by the square of your height in meters.

For example: Your height is 1.8 meters, the divisor of the calculation is  (1.8 * 1.8) = 3.24. If your weight is 70 kilograms, then your BMI is 70 / 3.24  = 21.6

BMI = weight (kg) / height (m) x height (m)

This method together with the body shape “Are you a pear or apple shape” provide a good indication of a person’s health as being overweight may result in diabetes and or cardiovascular diseases, while being underweight might be even worse due to nutrient deficiencies, impaired immunity and hormonal imbalance.

Underweight = less than BMI 18.5
Normal weight = BMI 18.5–24.9
Overweight = BMI 25–29.9
Obesity = BMI 30 or greater

If your BMI is more than 25 it is recommended that you start a weight control program and if your BMI is more than 30 you are considered obese, and need to seriously look after yourself, not tomorrow or next week, but starting now.

It must however be noted that BMI may overestimate body fat in very muscular people as muscle weight more than fat.

Now when you know your BMI it is further essential to know your Basal metabolic rate BMR, which is how many calories your body needs just to be functioning.

So for example if my BMR is 1288 kcal / 24 hours I know that my body require this amount of calories in order to function, if I consume less, it will effect my vital organs and my mental health.

For men:

BMR [kcal/24 h] = 66,47 + 13,7 × weight [kg] + 5 × height [cm] − 6,8 × age [years]

For women:

BMR [kcal/24 h] = 655,1 + 9,6 × weight [kg] + 1,8 × height [cm] − 4,7 × age [years]

Now based on your daily food intake and activity level, you can now estimate how many calories you should consume in order to lose weight or gain weight.