What is the fastest way to calculate BMI?
Emily Ross
Published Jan 09, 2026
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.
What is the easiest way to calculate BMI?
To calculate your BMI, multiply your height in inches times your height in inches. Then, divide your weight by that number. Finally, multiply that result by 705. People with a BMI of 25 or above are considered at higher risk for many health issues.
Which method of calculating BMI is the most accurate?
Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI) These two imaging techniques are now considered to be the most accurate methods for measuring tissue, organ, and whole-body fat mass as well as lean muscle mass and bone mass.
How do you calculate BMI without a calculator?
Your weight (in kilograms) ÷ [your height (in meters) x your height (in meters)] = BMI.
What is the new way to calculate BMI?
Current formula: BMI = weight(kg)/height(m)^2 = 703*weight(lb)/height(in)^2. The numbers 1.3 and 5734 are designed make the BMI reading unchanged for an adult of average height, which I take to be about 66.5 inches, i.e., 1.69 meters.
27 related questions foundIs BMI calculation realistic?
BMI (body mass index), which is based on the height and weight of a person, is an inaccurate measure of body fat content and does not take into account muscle mass, bone density, overall body composition, and racial and sex differences, say researchers from the Perelman School of Medicine, University of Pennsylvania.
How do you calculate BMI with weight?
Formula: weight (lb) / [height (in)]2 x 703
Then, calculate BMI by dividing weight in pounds (lb) by height in inches (in) squared and multiplying by a conversion factor of 703.
How do you calculate BMI with height and feet?
For example, if your weight is 60 kilograms and your height is 5 feet 3 inches, your BMI will be calculated as follows:60 / 2.61 (1.6 * 1.6) (5 feet 3 inches is approximately 1.6 meters)This gives us a BMI reading at 22.9.
How do you calculate BMI in feet and pounds?
Body Mass Index, or BMI, is a measurement of body fat based on height and weight. It can be calculated using pounds and inches: BMI = (weight in pounds x 703) / (height in inches x height in inches).
Why is waist-to-hip ratio better than BMI?
Body mass index (BMI) has been reported to be related to the risk of type 2 diabetes and hypertension. However, waist circumference or waist-to-hip ratio (WHR) can better reflect the accumulation of intra-abdominal fat and might be a better predictor than BMI of the risk of type 2 diabetes and hypertension.
What is more accurate than BMI?
Waist-to-height ratio (WHtR)
WHtR is more accurate than BMI because it takes central fat into consideration. Central fat is important because it collects around the organs in your midsection and has been closely linked to conditions such as heart disease.
Is BMI The best measure of obesity?
Estimations of body fat beyond BMI include measurements with calipers and waist-to-hip ratio measurements. However inaccurate, BMI is the most convenient way to classify body fat mass and obesity. There are, on the other hand, better methods to measure whole body fat levels.
What is a woman's BMI?
A healthy BMI for women falls between 18.5 and 24.9.
How do I calculate BMI in Excel?
What To Do
- Open Microsoft Excel, then press Alt+F11on keyboard, so VBE (Visual Basic Editor) window is displayed.
- Open a module by selecting Module on Insert menu and write this script: Function BMI(weight, height) BMI = weight / (height / 100) ^ 2 End Function.
- Close the VBE window and back to Excel.
What is my BMI if I weigh 160?
Inside the square where your weight and height meet is a number that is an estimate of your BMI. For example, if you weigh 160 pounds and are 5'7", your BMI is 25.
What should my waist size be?
For your best health, your waist should be less than 40 inches around for men, and less than 35 inches for women, although it may vary depending on race or ethnicity. If it's larger than that, you may want to talk with your doctor about what your next steps are, including losing weight.
How do I calculate my child's BMI?
To calculate your child's BMI:
- Take your child's weight in pounds. (For example, 37 pounds, 4 ounces becomes 37.25.)
- Divide that number by 2.2. (So, 37.25 divided by 2.2 equals 16.9 kilograms.).
- The resulting number is your child's weight in kilograms.
How can I calculate weight?
It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.
How do you calculate ideal body weight?
Ideal body weight is computed in men as 50 + (0.91 × [height in centimeters − 152.4]) and in women as 45.5 + (0.91 × [height in centimeters − 152.4]). A simple alternative would be to compute ideal body weight as the weight corresponding to an ideal body mass index of 22 kg/m2.
How can I measure my BMI at home?
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.
Why is my BMI high when I'm not fat?
Your muscle mass makes up most of your weight
or overweight based on their BMI alone. Someone who has a high BMI due to muscle mass most likely doesn't need to worry about the health problems associated with obesity and being overweight.
Why is my BMI so high but not fat?
You can have a high BMI even if you have very little body fat, especially if you're male and very muscular. It doesn't take into account your waist circumference, which can be a good measure of your risk for certain diseases, including heart disease and type 2 diabetes.