You asked: How is BMI determined?

Body mass index (BMI) is a person’s weight in kilograms divided by the square of height in meters. BMI is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity.

How do I calculate my BMI?

Body Mass Index is a simple calculation using a person’s height and weight. The formula is BMI = kg/m2 where kg is a person’s weight in kilograms and m2 is their height in metres squared. A BMI of 25.0 or more is overweight, while the healthy range is 18.5 to 24.9. BMI applies to most adults 18-65 years.

How do you calculate BMI in pounds?

Then, calculate BMI by dividing weight in pounds (lb) by height in inches (in) squared and multiplying by a conversion factor of 703. When using a handheld calculator, if your calculator has a square function, divide weight (lb) by height (in) squared, multiply by 703, and round to one decimal place.

Is BMI really accurate?

Despite concerns that BMI doesn’t accurately identify whether a person is healthy, most studies show that a person’s risk of chronic disease and premature death does increase with a BMI lower than 18.5 (“underweight”) or above 30.0 (“obese”) ( 4 , 5 ).

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How is BMI calculated in South Africa?

BMI is calculated by dividing weight in kilograms by height in metres squared. For example, if you are 1.65m tall and weigh 85kg: weight / height squared = 85 / 1.65 x 1.65 = 85 / 2.72 = 31.25. Then your BMI would be 31.25. Your News24 subscription is an investment in independent journalism.

What is a good BMI for my age?

A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight. A BMI over 30 indicates obesity.

How do I determine my ideal weight?

Updated Equations for Ideal Weight

  1. Weight in pounds = 5 x BMI + (BMI divided by 5) x (Height in inches minus 60)
  2. Weight in kilograms = 2.2 x BMI + (3.5 x BMI) x (Height in meters minus 1.5)

What is my BMI if I weigh 160?

The Body Mass Index of 26.62 is derived from the weight of 160 pounds divided by the square of height 5’5″. You are weighing 10.35 lb more than the healthy or optimum weight.

What is the normal range of BMI?

How is BMI interpreted for adults?

BMI Weight Status
Below 18.5 Underweight
18.5 – 24.9 Normal or Healthy Weight
25.0 – 29.9 Overweight
30.0 and Above Obese

How many pounds does it take to lower BMI?

To make your face look more attractive, you’d need to lower your BMI by about 2.5 points. That means a woman and man of average height would need to lose about 14 pounds and 18 pounds, respectively, the study found.

What are the disadvantages of BMI?

BMI is also extremely cost-efficient, as calculations only take into account gender, height and weight. But as experts explain, BMI may be too simple. Since muscle weighs more than fat, BMI isn’t accurate in patients with extreme amounts of muscle.

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Why do doctors still use BMI?

Body mass index, or BMI, has been used for over 100 years to help health professionals decide whether a patient is overweight or underweight. It is used in population studies, by doctors, personal trainers, and others.

What is the ideal BMI for a woman?

Adult BMI Calculator

BMI Weight Status
Below 18.5 Underweight
18.5—24.9 Normal
25.0—29.9 Overweight
30.0 and Above Obese

What is my ideal weight in kg?

Ideal body weight (men) = 50 kg + 1.9 kg for every inch above 5 feet. Ideal body weight (women) = 49 kg + 1.7 kg for every inch above 5 feet.

What is the normal BMI for South Africa?

How to calculate your BMI.

BMI (kg/m²) Approx. pants size
Underweight <18.5
Normal 18.5 – 24.9 Men ≤ 36/ Women ≤ 40 (US 14)
Overweight 25 – 29.9 Men ≥ 38/ Women ≥ 42 (US 16)
Obesity >30.0 Men ≥ 42/ Women ≥ 44 (US18)

What weight should I be for a BMI of 25?

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.

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