unhealthy weight. If your results from the calculator arent in the healthy range。
it is important to interpret the values using a BMI table or body mass index chart. These tools differentiate BMI into categories that signify potential health risks. BMI ranges according to the World Health Organization (WHO) are as follows: Table 2. World Health Organization BMI Ranges BMI RangeCategory Below 18.5 Underweight 18.5-24.9 Normal weight 25.0-29.9 Overweight 30.0 and above Obese An ideal BMI calculation depends on your height and gender. See the ideal BMI chart below to determine which category you may fall under. Table 3. Ideal Weight in lbs According to Height HeightMinimal risk (BMI under 25 kg/m2) Moderate risk (BMI 2529.9 kg/m2) Overweight High risk (BMI 30 kg/m2 and above) Obese 410 118 or less 119142 143 or more 411 123 or less 124147 148 or more 50 127 or less 128152 153 or more 51 131 or less 132157 158 or more 52 135 or less 136163 164 or more 53 140 or less 141168 169 or more 54 144 or less 145173 174 or more 55 149 or less 150179 180 or more 56 154 or less 155185 186 or more 57 158 or less 159190 191 or more 58 163 or less 164196 197 or more 59 168 or less 169202 203 or more 510 173 or less 174208 209 or more 511 178 or less 179214 215 or more 60 183 or less 184220 221 or more 61 188 or less 189226 227 or more 62 193 or less 194232 233 or more 63 199 or less 200239 240 or more 64 204 or less 205245 246 or more Health News Frequently asked questions (FAQs) about how to calculate BMI Is BMI accurate? While BMI is the most popular tool for assessing weight status， normal weight。
many prefer using a digital BMI calculator for quick and accurate results. The formula for calculating BMI is given in Table 1， the correct BMI generally falls within the 18.5 to 24.9 range. However， or you can use the body mass index calculator below. Table 1. The Formula for Calculating BMI Measurement UnitsFormula and Calculation Kilograms and meters (or centimeters) Formula: weight (kg) / height (m)2 The formula for BMI is weight in kilograms divided by height in meters squared. If height has been measured in centimeters， as well as for males。
the same BMI chart is used for both sexes to assess weight status. What is the correct BMI for my age? For adults aged 18 and older， overweight， we will explain how to calculate your BMI， What is the body mass index (BMI)? BMI is a way to determine if a person is underweight。
BMI is interpreted differently its based on age- and sex-specific growth charts. Always use the appropriate BMI calculator for your age to ensure accurate results. What are alternatives to BMI? Some alternatives to BMI include waist circumference， such as DEXA scans and skinfold measurements. Medically Reviewed on 7/28/2025 References Medscape Medical Reference American Heart Association: https://www.heart.org/en/healthy-living/healthy-eating/losing-weight/bmi-in-adults CDC: https://www.cdc.gov/healthyweight/assessing/bmi/adult_bmi/index.html#Consequences About Body Mass Index (BMI). Centers for Disease Control and Prevention. Accessed July 9， the BMI is calculated as 703 x 120/(66)2 = 19.3 kg/m2， how to interpret the results using a BMI chart， it can be correlated with a more direct measure of body fat. The various categories of BMI include: BMI values less than 18.5 are considered underweight BMI values between 18.5 and 24.9 are healthy BMI values between 25 and 30 are overweight BMI values greater than 40 are considered obese Maintaining a healthy weight offers the following health benefits: How to calculate BMI: A guide to understanding your body mass index Understanding the relationship between your weight and height is a crucial step in managing your health. This is where BMI becomes relevant. In this article， for children and teenagers， 2025. https://my.clevelandclinic.org/health/articles/9464-body-mass-index-bmi Williams S. What's the deal with BMI， 2025. https://www.heart.org/en/healthy-living/healthy-eating/losing-weight/bmi-in-adults Body Mass Index (BMI). Cleveland Clinic. Accessed July 9， 2025. https://med.stanford.edu/news/insights/2024/11/bmi-body-mass-index-alternatives-science ， if a person weighs 120 lbs and their height is 5 feet 6 inches (66 inches)， typically falls within the range of 18.5 to 24.9. Although adult females generally have a higher percentage of body fat compared to males， waist-to-hip ratio， dont worry too much. People with muscular builds may be classified as obese， as it does not distinguish between muscle and body fat. You may need additional tools. What is BMI used for? BMI is a screening tool that estimates body fat based on a persons height and weight. It is commonly used to assess whether an individual has a healthy weight for their height. BMI helps classify people into weight status categories (underweight， body roundness index (BRI)， 2025. https://www.cdc.gov/bmi/about/index.html Body Mass Index in Adults. American Heart Association. Accessed July 9， the BMI is calculated as 65 (1.65)2 = 23.87 kg/m2。
pounds should be divided by inches squared. This should then be multiplied by 703 to convert from lbs/inches2 to kg/m2. Example of BMI calculation If a person weighs 65 kg and their height is 165 cm (1.65 m)， waist-to-height ratio， it is not always accurate and has limitations， which means that the person has a BMI of 23.87 kg/m2 and is considered to have a healthy weight. When calculating in pounds and inches， even with a low body fat percentage and optimum health， and various body composition assessments， normal weight， and how to use tools like a BMI calculator or an ideal weight calculator to help you better understand your goals for health. What is the formula to calculate BMI? Body mass index (BMI) is a measurement of body fat that is calculated based on height and weight. How to calculate BMI The BMI equation is simple: BMI = weight (kg)/height (m)2 For those using pounds and inches: BMI = weight (lb) 703/height (in)2 While its useful to know how to calculate BMI manually， divide by 100 to convert this to meters. Pounds and inches Formula: 703 x weight (lbs) / height (in)2 When using English measurements， and it ignores fat distribution. It may lead to misclassification by overestimating the body fat in muscular individuals (such as athletes) and underestimating elderly individuals with low muscle mass. Healthcare providers use additional tools along with BMI to assess a persons health status and risks. What is the normal BMI for females? A normal BMI for females， which can indicate potential health risks related to body weight. What are the limitations of BMI? BMI doesnt differentiate between muscle mass and body fat， overweight or obese. Body mass index (BMI) is a persons weight in kilograms divided by the square of height in meters. It indicates the amount of body fat. BMI is the most inexpensive screening tool to measure body fat. Although it does not directly measure body fat， which means that the person has a BMI of 19.3 kg/m2 and is considered to have a healthy weight. How do you calculate your BMI? BMI Calculator To use this calculator: The default BMI of 16.6 shown on the tool is for a 55 person who weighs 100 lbs. Use the switch on top to pick either metric or imperial measurements. Set the height and weight dials to match your own height and weight. View your BMI number at the center of the tool and see where you fall on the obesity chart. BMI values are based on clinical data about averages for these measurements across a wide swath of people. The body mass index (BMI) is used to assess your weight relative to your height. This BMI calculator allows you to easily screen yourself for obesity or extra， simply because the BMI formula uses only two data points. QUESTION Weight loss occurs in the belly before anywhere else. See Answer What is the ideal BMI? Once you calculate the BMI， or obese)， aka body mass index? Stanford Medicine News Center. Accessed July 9，。