BMI Calculator
Enter your height and weight to calculate BMI
Healthy Living Tips
• Aim for at least 30 minutes of moderate exercise daily
• Include plenty of fruits and vegetables in your diet
• Stay hydrated - drink at least 8 glasses of water daily
• Get 7-9 hours of quality sleep each night
• Regular health check-ups are important
Health Statistics
Health Risks
- Enter height and weight to see risks
Recommendations
- Enter height and weight to get personalized recommendations
WHO BMI Categories
Your BMI Awaits
Enter your height and weight above to calculate your Body Mass Index, get your weight category, and receive personalized health recommendations.
BMI Categories Chart
| BMI Range | Category | Color Code | Health Risk | Recommendation |
|---|---|---|---|---|
| Below 18.5 | Underweight | Increased risk of nutritional deficiencies, osteoporosis | Gradual weight gain with nutrient-dense foods | |
| 18.5 - 24.9 | Normal Weight | Lowest risk, optimal health | Maintain current lifestyle with regular exercise | |
| 25.0 - 29.9 | Overweight | Moderately increased risk | Weight loss through diet and exercise | |
| 30.0 - 34.9 | Obesity Class I | High risk | Medical supervision for weight loss | |
| 35.0 - 39.9 | Obesity Class II | Very high risk | Professional medical intervention needed | |
| 40.0 and above | Obesity Class III | Extremely high risk | Urgent medical attention required |
Important Notes About BMI
- • BMI is a screening tool, not a diagnostic of body fat or health
- • Does not account for muscle mass, bone density, or body composition
- • Athletes may have higher BMI due to muscle, not fat
- • Older adults may have lower BMI due to muscle loss
- • Always consult healthcare provider for personalized advice
Frequently Asked Questions
BMI (Body Mass Index) is a measure of body fat based on height and weight. It's calculated using these formulas:
Metric Formula:
BMI = weight (kg) ÷ [height (m)]²
Imperial Formula:
BMI = [weight (lbs) ÷ [height (in)]²] × 703
Example: A person weighing 70 kg and 1.75 m tall has BMI = 70 ÷ (1.75 × 1.75) = 22.86
BMI has limitations and may not be accurate for:
For most adults, BMI provides a reasonable estimate of body fat. However, it should be used alongside other measurements for a complete health assessment.
According to World Health Organization (WHO) standards:
The "normal" range (18.5-24.9) is associated with the lowest risk of health problems. However, individual factors like age, gender, and ethnicity should also be considered.
Your ideal weight range depends on your height and target BMI. For a healthy BMI (18.5-24.9), here are approximate weight ranges:
Use our calculator above to get your personalized healthy weight range. Remember that muscle weighs more than fat, so focus on body composition rather than just weight.
BMI and body fat percentage measure different aspects:
BMI
- • Estimates based on height & weight
- • Simple, non-invasive calculation
- • Population screening tool
- • Doesn't distinguish fat vs muscle
- • Free and easy to calculate
Body Fat %
- • Measures actual fat percentage
- • Requires special equipment
- • Individual assessment
- • Distinguishes fat vs muscle
- • More accurate but costly
For most people, BMI provides sufficient information. Body fat percentage is more accurate but typically requires professional measurement.