Professional BMI Calculator
Based on WHO & CDC Guidelines with Comprehensive Health Risk Assessment
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Your Body Mass Index
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Underweight
<18.5 Normal
18.5-24.9 Overweight
25-29.9 Obese
≥30
<18.5 Normal
18.5-24.9 Overweight
25-29.9 Obese
≥30
Interpretation
Enter your measurements to get personalized interpretation.
Weight Management
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Abdominal Obesity Risk
Low Risk
Increased Risk
High Risk
Waist circumference: -- cm
Health Risk Assessment
Country-Specific Guidelines
References: WHO (2023), CDC (2023), NHS (2023), International Diabetes Federation (2021)
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Medical Disclaimer
BMI is a screening tool only and does not directly measure body fat or health status.
Key Limitations:
- Muscle mass: May overestimate fat in athletes and underestimate in elderly
- Ethnic differences: Asian populations may have higher health risks at lower BMI
- Body fat distribution: Does not account for visceral fat (waist measurement helps)
- Age/gender: Older adults may have different healthy ranges
When to Consult a Doctor:
- BMI ≥ 30 (Obese) or BMI ≥ 25 with weight-related conditions
- Waist circumference ≥ 40in (102cm) for men or ≥35in (88cm) for women
- Unexplained weight changes
- Existing health conditions (diabetes, hypertension, etc.)
Note: Not for use with children, pregnant women, or competitive athletes.
Comprehensive Health Assessment Should Include:
- Body composition analysis (DEXA, BIA)
- Blood pressure, cholesterol, and blood sugar tests
- Medical history review
- Physical activity assessment