Calculate Your BMI
Disclaimer: This BMI calculator provides an estimate and should not be considered medical advice. BMI has limitations and may not be accurate for all individuals. Always consult with healthcare professionals for proper health assessments.
What is BMI?
Body Mass Index (BMI) is a numerical value derived from your weight and height. It's used as a screening tool to categorize individuals as underweight, normal weight, overweight, or obese.
The formula for BMI is:
BMI = weight(kg) / height²(m²)
For imperial units (pounds and inches):
BMI = (weight(lbs) × 703) / height²(in²)
BMI Categories
Underweight
BMI: Under 18.5
Increased risk of nutrient deficiencies and osteoporosis.
Normal weight
BMI: 18.5 to 24.9
Lowest risk of health problems related to weight.
Overweight
BMI: 25 to 29.9
Increased risk of heart disease, high blood pressure, and type 2 diabetes.
Obesity Class I
BMI: 30 to 34.9
High risk of heart disease, high blood pressure, and type 2 diabetes.
Obesity Class II
BMI: 35 to 39.9
Very high risk of weight-related health problems and early mortality.
Obesity Class III
BMI: 40 and above
Extremely high risk of weight-related health problems and early mortality.
BMI Limitations
While BMI can be a useful tool for identifying potential weight problems in adults, it has several limitations:
- Muscle vs. Fat: BMI doesn't distinguish between muscle and fat. Athletes with high muscle mass may have a high BMI but not be overweight.
- Age Considerations: BMI may overestimate body fat in older adults who have lost muscle mass.
- Body Types: It doesn't account for different body types and fat distribution patterns.
- Other Factors: BMI doesn't consider factors like bone density, racial differences, or sex-specific differences.
BMI should be considered alongside other measurements and clinical assessments for a comprehensive health evaluation.
BMI Chart
| BMI | Here's the rest of the BMI calculator page code: ```typescript Weight Classification | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Increased risk of nutritional deficiency and osteoporosis |
| 18.5 - 24.9 | Normal weight | Lowest risk of health problems |
| 25.0 - 29.9 | Overweight | Increased risk of heart disease, high blood pressure, stroke, diabetes |
| 30.0 - 34.9 | Obesity Class I | High risk of heart disease, high blood pressure, stroke, diabetes |
| 35.0 - 39.9 | Obesity Class II | Very high risk of health problems |
| 40.0 and above | Obesity Class III | Extremely high risk of health problems |
Tips for Maintaining a Healthy Weight
Regular Physical Activity
Aim for at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity per week, plus muscle-strengthening activities.
Balanced Diet
Focus on fruits, vegetables, whole grains, lean proteins, and healthy fats. Limit processed foods, sugary drinks, and excessive alcohol.
Portion Control
Be mindful of portion sizes, even with healthy foods. Use smaller plates, read food labels, and avoid eating directly from packages.
Regular Monitoring
Track your weight, BMI, and other health metrics regularly. Consistent monitoring helps identify changes early for timely adjustments.