BMI Calculator
Your Results
<18.5
18.5-24.9
25-29.9
30-34.9
≥35
Healthy Weight Range
BMI Categories
| Category | BMI Range | Status |
|---|---|---|
| Underweight | < 18.5 | Below healthy weight |
| Normal | 18.5 - 24.9 | Healthy weight |
| Overweight | 25.0 - 29.9 | Above healthy weight |
| Obese Class I | 30.0 - 34.9 | Moderately obese |
| Obese Class II | 35.0 - 39.9 | Severely obese |
| Obese Class III | ≥ 40.0 | Extremely obese |
About BMI Calculator
Body Mass Index (BMI) is a measure of body fat based on height and weight. It's a useful screening tool to identify potential weight problems in adults.
How BMI is Calculated:
- Metric: BMI = weight (kg) / [height (m)]²
- Imperial: BMI = [weight (lbs) / height (in)²] × 703
Important Notes:
- BMI is a screening tool, not a diagnostic tool
- It doesn't directly measure body fat percentage
- Athletes and muscular individuals may have high BMI despite low body fat
- Doesn't account for age, sex, ethnicity, or muscle mass
- Should be used in combination with other health assessments
When to Consult a Doctor:
- If your BMI indicates you're underweight or obese
- For personalized health advice and risk assessment
- To discuss weight management strategies
- If you have concerns about your health
Limitations:
BMI doesn't distinguish between weight from fat and weight from muscle. It also doesn't account for where body fat is distributed. Other measurements like waist circumference, body composition analysis, and overall health markers should also be considered.
Disclaimer: This BMI calculator is for informational purposes only and should not replace professional medical advice. Always consult with a healthcare provider for personalized health guidance.