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Understand how your BMI relates to potential health risks and preventive measures.
Body Mass Index (BMI) is a measurement that uses your height and weight to determine if you're at a healthy weight. It's calculated by dividing your weight in kilograms by your height in meters squared.
While BMI doesn't directly measure body fat, it correlates well with more direct measures of body fat. It's a quick and inexpensive method to screen for weight categories that may lead to health problems.
Maintaining a healthy BMI is important for overall health and can help prevent and control many diseases and conditions. Your BMI can indicate potential health risks associated with being underweight, overweight, or obese.
BMI is a useful general indicator but doesn't account for muscle mass, bone density, overall body composition, and racial/sex differences. Athletes with high muscle mass may have a high BMI but low body fat. Always consult with a healthcare provider for a comprehensive health assessment.
For most adults, checking your BMI every 3-6 months is sufficient unless you're actively trying to lose or gain weight. Significant weight changes (5% of body weight) warrant recalculating your BMI. Children and teenagers should be assessed more frequently due to growth patterns.
BMI may not be accurate for athletes, pregnant women, the elderly, or children. For children and teens, BMI is age and sex-specific and is often referred to as BMI-for-age. Our calculator is intended for adults 20 years and older. Different ethnic groups may also have different BMI health risk associations.
The BMI formula is the same for both men and women. However, women naturally have more body fat than men at the same BMI. Our calculator adjusts recommendations based on gender to provide more accurate health information. Men tend to carry more weight in their abdominal area, which carries higher health risks, while women tend to carry more weight in their hips and thighs.