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Calculate your Body Mass Index (BMI) instantly with our accurate calculator. Learn what your BMI means for your health, find your healthy weight range, and get actionable tips for achieving your wellness goals.
Enter your weight and height to calculate your BMI
Body Mass Index (BMI) is a widely used measurement that estimates body fat based on your height and weight. While not perfect, BMI provides a quick screening tool to categorize weight status and identify potential health risks associated with being underweight, overweight, or obese.
The BMI formula was developed in the 1830s by Belgian mathematician Adolphe Quetelet. Today, it's used by healthcare professionals worldwide as an initial assessment tool. A BMI between 18.5 and 24.9 is considered normal weight, below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is classified as obese.
It's important to understand that BMI doesn't distinguish between muscle and fat mass. Athletes and very muscular individuals may have a high BMI despite having low body fat. Similarly, older adults may have normal BMI but higher body fat percentage due to muscle loss. BMI also doesn't account for fat distribution, which affects health risks.
Use BMI as one of several health indicators. Combine it with waist circumference measurements, body composition analysis, and overall health assessments for a complete picture of your health status.
BMI is a useful screening tool but not a complete health assessment. It doesn't account for muscle mass, bone density, or fat distribution. Use it alongside other health indicators like waist circumference and body composition.
Muscle weighs more than fat. Athletes and very muscular individuals may have high BMI despite being healthy and having low body fat. BMI can't distinguish between muscle and fat mass.
Consult with a healthcare provider for personalized advice. They can assess your overall health, body composition, and risk factors to develop an appropriate plan. Don't rely on BMI alone.