BMI Calculator
BMI Classification Table
BMI Range | Category | Meaning |
---|---|---|
Less than 18.5 | Underweight 😕 | Below the healthy weight range |
18.5 – 24.9 | Normal 😊 | Healthy weight range |
25.0 – 29.9 | Overweight 😐 | Above the healthy weight range |
30.0 – 34.9 | Obesity Class I 😟 | Moderate risk – seek medical advice |
35.0 – 39.9 | Obesity Class II 😟 | High risk – medical help recommended |
40.0 and above | Obesity Class III 😨 | Very high risk – urgent medical care needed |

BMI stands for Body Mass Index. It's a measure that estimates body fat based on height and weight. It's often used as a general indicator of whether a person is a healthy weight.
Your BMI result can help you understand your health better. Discuss your BMI with a healthcare provider for personalized advice.
What are the BMI categories?
• Underweight = less than 18.5
• Normal = 18.5 - 24.9
• Overweight = 25 - 29.9
• Obese = 30 - 34.9
• Extremely Obese = 35 or greater
Why use a BMI calculator?
A BMI (Body Mass Index) calculator is a quick and reliable tool designed to help individuals understand whether their body weight is within a healthy range based on their height. By providing a numerical value, it offers valuable insight into potential health risks associated with being underweight, overweight, or obese. Unlike guessing or relying solely on appearance, a BMI calculator gives you a science-backed snapshot of your body composition—empowering you to take control of your wellness journey. Whether you're setting fitness goals, managing nutrition, or simply staying informed, using a BMI calculator is a smart first step toward better health awareness.