- Last updated February 14, 2025
BMI Calculator
Also Known as: Body Mass Index Calculator, Quetelet Index Calculator (historical term for BMI), Weight and Height Calculator, Health Index Calculator, Obesity Screening Tool, Healthy Weight Calculator
Table of Contents
01 What is BMI (Body Mass Index)?
BMI, or Body Mass Index, is a simple numerical measure used to assess whether a person’s weight is appropriate for their height. It provides a general indication of body fat and is widely used as a screening tool for categorizing individuals into weight categories such as underweight, normal weight, overweight, or obese.
While BMI is a quick and easy way to assess weight status, it does not account for factors like muscle mass, bone density, or fat distribution. Therefore, it should be used alongside other health assessments for a more accurate understanding of an individual’s overall health.
02 How is it calculated?
BMI, or Body Mass Index, is a measure of body fat based on your weight and height. It is calculated using the formula: weight (kg) ÷ [height (m)]² or weight (lbs) × 703 ÷ [height (in)]².
03 Why is BMI important for health?
BMI helps assess whether you are underweight, normal weight, overweight, or obese, which can indicate potential health risks like heart disease, diabetes, or other conditions.
04 What is a healthy BMI range?
A healthy BMI typically falls between 18.5 and 24.9. Values below 18.5 indicate underweight, while values above 24.9 suggest overweight or obesity.
05 Can BMI accurately measure body fat?
While BMI provides a general estimate of body fat, it doesn’t account for factors like muscle mass, bone density, or fat distribution, which can affect its accuracy.
06 How do I use the BMI calculator?
Simply input your weight and height into the calculator to instantly determine your BMI and see which category you fall into.
07 What are the limitations of BMI?
BMI doesn’t differentiate between muscle and fat and may not be accurate for athletes, pregnant women, children, or older adults with low muscle mass.
08 How can I lower my BMI if it’s too high?
Lowering your BMI involves adopting a healthy diet, regular exercise, and lifestyle changes to achieve sustainable weight loss.
09 Is BMI different for men and women?
The calculation is the same for both genders; however, body composition differences mean men and women may interpret their results slightly differently.
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