BMI Calculator
Calculate your Body Mass Index based on your height and weight.
Your BMI
Underweight
<18.5Normal
18.5–24.9Overweight
25–29.9Obese
30+
<18.5Normal
18.5–24.9Overweight
25–29.9Obese
30+
Healthy Weight Range
BMI Prime
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on height and weight. It applies to adult men and women aged 20 and older. BMI is a screening tool — it doesn't diagnose body fatness or health conditions directly.
BMI = weight(kg) / height(m)²
BMI Categories
| BMI | Category |
|---|---|
| < 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25.0 – 29.9 | Overweight |
| 30.0 – 34.9 | Obesity Class I |
| 35.0 – 39.9 | Obesity Class II |
| ≥ 40.0 | Obesity Class III |
BMI doesn't account for muscle mass, bone density, age, sex, or ethnicity. Athletes may have a high BMI due to muscle mass. Always consult a healthcare provider for a full health assessment.