## calculate your body mass index

This calculator provides you with your Body Mass Index (BMI) and is designed for adults who are 20 years of age of older. BMI is a rough way to gain a sense of body fat percentage without the fancy equipment.

### What is Body Mass Index?

Your body mass Index is calculated by taking a person’s body weight in kilograms and dividing it by the square root of their height in meters. Essentially, BMI is a way of getting a sense of your body fat percentage without skin calipers, hydrostatic weighing or a fancy body fat device.

### How is Your Body Mass Index Figure Used?

A high BMI figure can be an indicator that you have a high body fat percentage and the BMI figure is typically used as a screen tool but is not necessarily an accurate measure of body fat. For example, a body builder’s BMI level can typically show them in the “obese” category when they have very low body fat.

### Why is the body mass index used if not very accurate?

The body mass index is very inexpensive to use… hey, I’m giving it to you for free ;) BMI can be a useful screening tool but not a true accurate measure of body fat. If you are way out of the normal range, get your body fat tested. If you are slightly over the normal level or slightly under, don’t sweat it.

### How Exactly is the body Mass index calculated? What is the formula?

Ok, break out your pocket protector! You asked…

**Kilograms and meters (or centimeters) **BMI = weight (kg) / [height (m)]2

With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared. Because height is commonly measured in centimeters, divide height in centimeters by 100 to obtain height in meters.

Example: Weight = 68 kg, Height = 165 cm (1.65 m)

Calculation: 68 ÷ (1.65)2 = 24.98

**Pounds and inches Formula **weight (lb) / [height (in)]2 x 703

Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703.

Example: Weight = 150 lbs, Height = 5’5″ (65″)

Calculation: [150 ÷ (65)2] x 703 = 24.96

### If you are a bodybuilder or athlete and have a bmi over 25, would the bmi consider you to be overweight

Yes, if your BMI is between 25 and 29.9, you would be classified as overweight and if you BMI is over 30, you would be considered obese. Remember, take the BMI with a grain of salt and when the formula was create, it was based on the standard population of the time… not on athletes or bodybuilders. So relax…