To calculate your BMI, divide your weight in pounds by your height in inches squared, then multiply the results by a conversion factor of 703. For someone who is 5 feet 5 inches tall (65 inches) and weighs 150 pounds, the calculation would look like this: [150 ÷ (65)2] x 703 = 24.96.
Is the BMI formula accurate?
As most of us fitness-focused folks have likely heard, BMI is far from a perfect measurement. Much of the time, and often when it really counts, the BMI measurement may actually overestimate or even underestimate a person’s body fat. And when it does, it really does.
What is the correct BMI for my age?
According to the National Institutes of Health (NIH): A BMI of less than 18.5 means that a person is underweight. A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight.
Is BMI an accurate indicator of health?
BMI, the tool most often used to determine “healthy weight ranges”, was designed primarily to track the weight of populations. While it’s a simple and useful screening tool when looking at groups of people, it’s not an accurate marker of individual health.
What is a good BMI score?
For most adults, an ideal BMI is in the 18.5 to 24.9 range. For children and young people aged 2 to 18, the BMI calculation takes into account age and gender as well as height and weight. If your BMI is: below 18.5 – you’re in the underweight range.
Why do doctors still use BMI?
Body Mass Index Is a Good Gauge of Body Fat
The most basic definition of overweight and obesity is having too much body fat-so much so that it “presents a risk to health.” (1) A reliable way to determine whether a person has too much body fat is to calculate the ratio of their weight to their height squared.
How much should a 5’5 female weigh?
Height and Weight ChartHeightWeight5′ 3″107 to 140 lbs.169 to 220 lbs.5′ 4″110 to 144 lbs.174 to 227 lbs.5′ 5″114 to 149 lbs.180 to 234 lbs.5′ 6″118 to 154 lbs.186 to 241 lbs.Ещё 17 строк
What does a BMI of 29.8 mean?
This ratio of weight to height is known as the body mass index (BMI). People who are overweight (BMI of 25–29.9) have too much body weight for their height. People who are obese (BMI of 30 or above) almost always have a large amount of body fat in relation to their height.
How do I determine my ideal weight?
Adult Body Mass Index or BMI
- If your BMI is less than 18.5, it falls within the underweight range.
- If your BMI is 18.5 to 24.9, it falls within the normal or Healthy Weight range.
- If your BMI is 25.0 to 29.9, it falls within the overweight range.
- If your BMI is 30.0 or higher, it falls within the obese range.
What is more accurate than BMI?
Waist-to-height ratio more accurate than BMI in identifying obesity, new study shows. Summary: Calculating a person’s waist-to-height ratio is the most accurate and efficient way of identifying whether or not they are at risk of obesity in clinical practice, a new study shows.
What are the factors affecting BMI?
Factors such as age, sex, ethnicity, and muscle mass can influence the relationship between BMI and body fat.
Why BMI is a bad indicator?
For example, results can be thrown off by pregnancy or high muscle mass, and it may not be a good measure of health for children or the elderly. So then, why does BMI matter? In general, the higher your BMI, the higher the risk of developing a range of conditions linked with excess weight, including: diabetes.
Do Skinny People live longer?
June 25, 2009 — There is more evidence that people who are overweight tend to live longer than people who are underweight, normal weight, or obese. In a newly published study, people who were underweight and those who were extremely obese died the earliest.
What weight do I need to be to have a BMI of 25?
Charts and online calculators
4 in. tall is considered overweight (BMI is 25 to 29) if she weighs between about 145 and 169 pounds. She is considered obese (BMI is 30 or more) if she is closer to 174 pounds or more. A man who is 5 ft.
Is a BMI of 21 skinny?
Your body mass index, or BMI, is the relationship between your weight and your height. A BMI of 20-25 is ideal; 25-30 is overweight and over 30 is obese. If your BMI is under 18.5, you’re considered underweight. If your BMI is 18.5-20, you’re a bit underweight and can’t afford to lose more.