![]() ![]() ![]() But always remember that the BMI does not tell you anything about the make-up of your body - such as how much muscle or fat you have, how much physical activity you do, or your body type. Having a BMI score within the healthy weight range is a good sign that you are the right weight for your height. You should speak to your doctor to find out why you have a low BMI and about how to gain weight healthily. Women may have irregular periods and have a greater chance of osteoporosis. It may affect your skin, hair, and teeth or you may feel more tired than you should. What your BMI score means Underweightīeing underweight might mean you're not getting all the nutrients, vitamins, and minerals that your body needs to be healthy. But rather than working it out yourself you can use the BMI calculator above to find out which range you're in. You can also do this in imperial measurements. So, your BMI is 23, which falls within the healthy weight range.Your BMI is calculated by dividing your weight by your height squared.įor example, if you're 1.75m metres tall and weigh 70 kilograms, the calculation to get your BMI is: If you think you have an eating disorder, the BMI calculator may not be suitable for you. BMIīMI Chart What are the BMI ranges for children (boys and girls)?įor children and teens, the CDC publishes individual charts for both boys and girls.This calculator should only be used by adults. Pregnant or lactating women should not rely on these BMI results, and no action should be taken based on its values other than to consult a qualified person such as a doctor. In our first example, the patient’s BMI was 22.6, which falls in the healthy weight category. The categories are the same for both adult males and adult females. Once you calculate your BMI number, you can see which BMI category you fit in, per the CDC’s guidelines. Take the free BMI quiz to test your knowledge on BMI! What are the BMI ranges for an adult (male and female)? So instead of rounding to 23.6, it became 23.7. If the number in the 100ths place is 5 or greater, you round the 10ths place number up one digit. Rounding tip: Remember, when rounding to the nearest tenth, you look at the number’s value in the 100ths place (in this case, it was the number 9). Here’s a visual of how I solved the formula: We’ll round to the nearest tenth, so that gives us a final BMI of 23.7. ![]() Let’s begin solving this by first squaring 1.65, which means to multiply it by itself. We can plug those numbers right into our formula. Because these numbers are given in their required measurements, there is no need to convert anything. Because these measurements are given in metric units, we’ll use the metric BMI formula, which is slightly different because we don’t have to multiply by 703 like we did above:įirst, let’s go ahead and plug in our numbers. Don’t forget to add all of the inches when converting feet to inches for a person’s height! BMI Formula for Metric Unitsįor our next problem, our patient’s height is 1.65 meters (m), and their weight is 64.5 kilograms (kg). Quick TIP: What if our patient’s height had been 5 feet 5 inches tall instead of 6 feet even? We’d first multiply 5 feet X 12 to get 60 inches, but we’d also have to add the other 5 inches (because they are 5’5″), which would have given us a total of 65 inches for the patient’s height. Here’s what the formula looks like as I solved it: Finally, we’ll multiply 0.0322145061728395 by 703, which gives us a BMI of 22.6 (when rounded to the nearest tenth). Therefore, we multiply 72 X 72, which gives us 5,184. To square a number means to multiply it by itself. We can now plug these numbers into our formula and solve:įirst, let’s solve the 72 squared. Therefore we multiply 6 (feet) X 12 to get a total of 72 inches. Therefore, we must first convert feet to inches. The height was 6 feet, but the formula calls for the units to be in inches. Because these measurements are in imperial units (pounds and inches), we’ll use the formula below:įirst, let’s plug in our numbers to our BMI formula. Note: The formulas used to calculate BMI are the same for both male and female, adults and children.įor our first problem, let’s assume a patient weighs 167 pounds and is 6 feet tall. The measurements can be in either the metric system (kilograms and meters) or the imperial system (pounds and inches), but the formula is slightly different for each one. To calculate BMI, you must first determine a person’s height and weight. BMI scores are often used to screen for potential health problems, so it can be useful to know how to calculate BMI manually via the BMI math formula. ![]()
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