Disclaimer: This BMI calculator is for general informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Results may not be accurate for all individuals. Always consult your doctor or healthcare provider regarding your specific health condition.
Here are the standard BMI (Body Mass Index) classification ranges for adults, based on World Health Organization (WHO) guidelines:
For adults over 20 years old, BMI falls into one of the following categories.
🧍♂️ BMI Categories
| BMI Range |
Classification |
| Below 18.5 |
Underweight |
| 18.5 – 24.9 |
Normal weight |
| 25.0 – 29.9 |
Pre-obesity |
| 30.0 – 34.9 |
Obesity Class I |
| 35.0 – 39.9 |
Obesity Class II |
| 40.0 and above |
Obesity Class III |
These categories may differ slightly for children and certain ethnic groups.
✅ Healthy Lifestyle
To stay healthy and lower your risk of disease, here’s what the World Health Organization (WHO) recommends:
🥗 Eat Well
Enjoy a variety of fruits, vegetables, whole grains, nuts, and legumes. Limit salt, sugar, and unhealthy fats. Drink water instead of sugary drinks.
🏃♂️ Stay Active
Move your body regularly—aim for at least 30 minutes a day. Include activities like walking, dancing, or sports.
🚭 Avoid Tobacco
Don’t smoke or use tobacco products—it’s one of the top causes of preventable diseases.
🍷 Limit Alcohol
If you drink, do it in moderation. Less is better.
😴 Get Enough Sleep
Adults need around 7–8 hours of sleep per night to stay mentally and physically well.
🧠 Take Care of Your Mind
Manage stress, stay connected with others, and seek help if you’re feeling overwhelmed.
💡 Small daily choices add up to a healthier life.
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