Calculate your BMI and find out if you are underweight, healthy, overweight, or obese. Free BMI calculator with health recommendations.
BMI (Body Mass Index) is a screening tool that uses height and weight to estimate whether you are underweight, healthy weight, overweight, or obese. While BMI has limitations and does not distinguish muscle from fat, it remains the most widely used quick health screening metric. This calculator shows your BMI category and what it means for your health.
Underweight: BMI under 18.5 — may indicate malnutrition or medical issue. Normal weight: 18.5-24.9 — lowest risk for weight-related conditions. Overweight: 25-29.9 — increased risk of diabetes, heart disease, and hypertension. Obese Class I: 30-34.9. Class II: 35-39.9. Class III severe: 40+ — significantly elevated health risks.
BMI misclassifies muscular athletes as overweight due to high muscle mass, elderly with muscle loss as normal weight, and certain ethnicities where Asian populations have higher metabolic risk at lower BMI. Body fat percentage, waist circumference, and metabolic health markers provide a more complete picture than BMI alone.
The CDC defines healthy BMI as 18.5-24.9. Below 18.5 is underweight. 25-29.9 is overweight. 30+ is obese. For Asian Americans, many doctors use lower thresholds: 23+ for overweight and 27.5+ for obese due to higher metabolic risk at lower BMI values.
Yes. BMI is a screening tool not a diagnostic measure. Many muscular athletes have overweight BMI but excellent metabolic health. Conversely some people with normal BMI have high body fat and metabolic risks. Always interpret BMI alongside other health markers.
Calculate your target weight for BMI 24.9: multiply target BMI by height in meters squared. Example: 5 feet 8 inches (1.73m): 24.9 × (1.73²) = 24.9 × 2.99 = 74.5 kg = 164 lbs. Current weight minus 164 lbs equals weight to lose. Our calculator does this automatically.
Yes — every FreeFixo tool, including the BMI Calculator — Am I Overweight? Find Your Healthy Range, is 100% free with no paywall, no premium tier, and no usage limits. You do not need to create an account, enter a credit card, or share an email.
The BMI Calculator — Am I Overweight? Find Your Healthy Range uses the same formulas, rates, and reference data that financial planners, professionals, and government sources publish. Results are estimates intended for planning and education — for situations involving large sums or legal consequences, confirm with a qualified professional before acting.
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