Underweight
BMI < 18.5May relate to weak immunity, fatigue, or nutrient deficiencies.
- Eat nutrient-dense foods: protein, complex carbs, healthy fats.
- 3 main meals + healthy snacks.
- Include weight training to build muscle mass.
BMI Calculator
Calculate your Body Mass Index to understand your weight category and health range.
Health Range
Understand each BMI category and simple recommendations.
Normal
18.5 – 24.9Generally healthy and associated with lower disease risk.
- Maintain a balanced, varied diet.
- Stay physically active.
- Get routine health check-ups.
Overweight
25 – 29.9May increase risks of diabetes, heart disease, and hypertension.
- Emphasize whole foods and portion control.
- Increase activity: cardio + strength training.
- Track progress and consult a professional if needed.
Obesity
≥ 30Higher risks of metabolic and cardiovascular conditions.
- Personalized plan: nutrition + activity + sleep.
- Work with a healthcare professional.
- Set gradual, sustainable goals.
What is BMI?
Body Mass Index (BMI) estimates body fat using height and weight to categorize health ranges.
BMI is a quick screening tool, not a diagnosis. Factors like muscle mass, age, and ethnicity can affect interpretation.
BMI Table for Adults
WHO categories for adults aged 20+.
| Classification | BMI range (kg/m²) |
|---|---|
| Severe Thinness | < 16.0 |
| Moderate Thinness | 16.0 – 16.9 |
| Mild Thinness | 17.0 – 18.4 |
| Normal | 18.5 – 24.9 |
| Overweight | 25.0 – 29.9 |
| Obese Class I | 30.0 – 34.9 |
| Obese Class II | 35.0 – 39.9 |
| Obese Class III | ≥ 40.0 |
BMI Chart for Adults
BMI Formula
BMI=weight (kg)height (m) ²
Height is converted to meters automatically when you enter centimeters above.