Calculating bmi formula

Health professionals have been using body mass index (BMI) to help decide whether people are overweight or underweight for over 100 years. However, BMI has several flaws.BMI is derived from a simple math formula created in the 1830s by Lambert Adolphe Jacques Quetelet, a Belgian astronomer, mathematician, statistician, and sociologist.Researchers in population studies, doctors, personal trainers, and others use the BMI in their work.However, BMI has some important flaws. For example, it does not measure overall fat or lean tissue (muscle) content.It aims to estimate whether a person has a healthy weight by dividing their weight in kilograms (kg) by their height in meters (m) squared.The current BMI calculation divides a person’s weight by their height to the power of 2, or squared:BMI = weight (kg) / height2According to most criteria accepted around the world:a BMI of 18.49 or below means a person is underweighta BMI of 18.5–24.99 means they are of normal weighta BMI of 25–29.99 means they are overweighta BMI of 30–39.99 or more means they are obesea BMI of 40 or more means they are morbidly obeseIf you want to find out what your BMI is, use our BMI calculator.When Quetelet devised the BMI formula, there were no computers, calculators, or electronic devices, so he developed a simple system.Now, some people argue, we have technology that can help us add some complexity to the calculation. After all, people are three-dimensional, not two-dimensional, and healthy bodies grow in different shapes and sizes.In 2013, Nick Trefethen, a mathematician from Oxford University in the United Kingdom, wrote a letter to The Economist in which he questioned the usefulness of the current BMI formula, calling it a “bizarre measure.”Trefethen argued that the formula leads to confusion and misinformation. The height term, he says, divides the weight by too much when people

The ABSI calculator estimates the risk of premature mortality based on the A Body Shape Index (ABSI). The ABSI formula requires only a few variables: age, sex, body height, body mass, and waist circumference.The inclusion of the last measurement makes ABSI a better indicator of risk of mortality from excessive weight than the standard body mass index (BMI). Read the article below to find out more about the A Body Shape Index pros and cons and the ABSI formula! 🤓We try our best to make our Omni Calculators as precise and reliable as possible. However, this tool can never replace a professional doctor's assessment. If any health condition bothers you, consult a physician.A Body Shape Index (ABSI)The A Body Shape Index has been developed by Nir and Jesse Krakauer from a sample of Americans in the National Health and Nutrition Examination Survey. The aim of the authors was to develop a formula that is based on waist circumference and is approximately independent (less dependent) of height, weight, and BMI. They have developed the A Body Shape Index that includes five variables:Sex;Age;Weight;Height; andWaist circumference.🙋 If you are interested in the more known BMI, visit our BMI calculator: with a few inputs and no time at all, you be able to calculate its value!A Body Shape Index formula - ABSI formula and ABSI z score:1.We present the ABSI formula below:ABSI=WCBMI23×height12,\mathrm{ABSI}=\frac{\mathrm{WC}}{\mathrm{BMI}^{\frac{2}{3}}\times\mathrm{height}^{\frac{1}{2}}},where:WC\mathrm{WC} – The waist circumference, expressed in m\mathrm{m};height\mathrm{height} – Expressed in m\mathrm{m}; andBMI\mathrm{BMI} – Expressed in kg/m2\mathrm{kg}/\mathrm{m^2}, and is calculated using the following formula:BMI=weightheight2\qquad \mathrm{BMI}=\frac{\mathrm{weight}}{\mathrm{height}^2}2.To estimate the risk of premature mortality, we can calculate the ABSI z score as follows:ABSIz score ⁣= ⁣ABSI−ABSImeanABSISD\mathrm{ABSI}_{\text{z score}}\! =\! \frac{\mathrm{ABSI}-\mathrm{ABSI}_{\text{mean}}}{\mathrm{ABSI}_{\text{SD}}}where:ABSIz score\mathrm{ABSI}_{\text{z score}} – Calculated based on the mean and standard deviations of ABSI calculated for the given age and sex;ABSImean\mathrm{ABSI}_{\text{mean}} – The mean ABSI for the chosen

Calculators Pace Calculator Distance Converter VO2 Max Estimator Race Time Predictor BMI Calculator Calories Estimator Body mass index (BMI) is an approximation of an average adult's body fat by calculating a ratio between your weight and your height. While it is a good estimation for most people, it is rather inaccurate for people with low body fat or who are muscular. You should take this value as a suggestion and not as the absolute truth. Usage: Enter your height and weight and your BMI will be automatically calculated. Unit: Metric Height: Weight: BMI: N/A Interpreting your BMI* Category BMI range Underweight Below 18.5 Normal 18.5 - 24.9 Overweight 25.0 - 29.9 Obese 30.0 - 39.9 Extreme obesity 40 or above * This information is taken from the National Institute of Health (NIH). For more information regarding your weight and how to lead a healthy life style, please refer to NIH's Aim For A Healthy Weight.

Operation: Calculate Basal Metabolic Rate (BMR) for MenInstruction: Use this formula to calculate the Basal Metabolic Rate (BMR) for men.Formula: BMR = 88.362 + (13.397 * weight) + (4.799 * height) - (5.677 * age)Example: For a man weighing 70 kg, 175 cm tall, and 25 years old: BMR = 88.362 + (13.397 * 70) + (4.799 * 175) - (5.677 * 25) ≈ 1724.05 calories/dayUpload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Basal Metabolic Rate (BMR) for WomenInstruction: Use this formula to calculate the Basal Metabolic Rate (BMR) for women.Formula: BMR = 447.593 + (9.247 * weight) + (3.098 * height) - (4.330 * age)Example: For a woman weighing 60 kg, 160 cm tall, and 30 years old: BMR = 447.593 + (9.247 * 60) + (3.098 * 160) - (4.330 * 30) ≈ 1368.193 calories/dayUpload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Total Daily Energy Expenditure (TDEE)Instruction: Use this formula to calculate the Total Daily Energy Expenditure (TDEE).Formula: TDEE = BMR * activity_factorExample: For a person with a BMR of 1724.05 calories/day and moderate activity level: TDEE = 1724.05 * 1.55 ≈ 2672.28 calories/dayUpload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Body Mass Index (BMI)Instruction: Use this formula to calculate the Body Mass Index (BMI).Formula: BMI = weight / (height / 100)^2Example: For a person weighing 70 kg and 175 cm tall: BMI = weight / (height / 100)^2 = 70 / (1.75)^2 ≈ 22.86Upload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Macronutrients (Protein)Instruction: Use this formula to calculate the amount of protein needed to maintain weight.Formula: Protein = 0.8 * weightExample: For a person weighing 70 kg: Protein = 0.8 * 70 = 56 g/dayUpload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Macronutrients (Fat)Instruction: Use this formula to calculate the amount of fat needed to maintain weight.Formula: Fat = 0.3 * TDEE / 9Example: For a person with TDEE of 2670.1 calories/day: Fat = 0.3 * 2670.1 / 9 ≈ 89 g/dayUpload your Excel or CSV file to perform automatic calculations. Formulas are applied instantly, and you can download the results by right-clicking on the table.Operation: Calculate Macronutrients (Carbs)Instruction: Use this formula to calculate the amount of carbohydrates needed to maintain weight.Formula: Carbs = (TDEE - (Protein * 4 + Fat * 9)) / 4Example: For a person with TDEE of 2670.1 calories/day, Protein = 56 g/day, and Fat = 89 g/day: Carbs = (2670.1 - (56 * 4 + 89 * 9)) / 4 ≈ 411.275

Setting a healthy weight-loss goal is an excellent start on your journey to better health. Getting healthy on the inside means living longer, doing more, and becoming happier. Find out what a healthy weight-loss goal looks like for you. So, how do you determine a healthy target weight? Some people rely on how they feel at a specific weight, while others simply want to fit into a particular clothing or belt size. Whatever your reasoning, you can use these tools to help you set weight-loss goals to help support improved overall health.Using your BMI as a goalBody mass index or BMI measures your weight relative to your height. It does not account for body composition. A BMI calculator determines your current BMI. A BMI of 18.5-24.9 correlates with the lowest health risk for the general population. Overweight is defined as a 25.0-29.9 BMI, obesity is 30 or higher BMI, and underweight is Calculating your weight-loss goal from a percentageSmall weight-loss goals are more manageable than focusing only on the ultimate goal. And setting your first goal to emphasize health is a smart way to start the journey.Losing as little as 5% of your initial body weight can help you reduce your risk for chronic disease and better manage existing chronic diseases (e.g., high blood pressure, high cholesterol, and type 2 diabetes).To calculate your target weight, multiply your current weight by 0.95.Example: Your original starting body weight is 250 pounds.Your next bodyweight goal would be 250 x 0.95 = 237.5 pounds.What is a healthy weight-loss rate?A safe rate of weight loss when working on nutrition and lifestyle changes is 0.5-1% per week. This means someone weighing 200 pounds could expect to lose one to two pounds per week or 0.45-0.90 kilograms. Rapid weight loss without medication or surgery could be a