BMI calculator
BMI Calculator
Calculate your Body Mass Index (BMI) based on your height and weight
< 18.5
18.5 - 24.9
25 - 29.9
≥ 30
Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.
BMI Categories
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Increased risk |
| Normal weight | 18.5 - 24.9 | Lowest risk |
| Overweight | 25 - 29.9 | Increased risk |
| Obesity Class I | 30 - 34.9 | High risk |
| Obesity Class II | 35 - 39.9 | Very high risk |
| Obesity Class III | ≥ 40 | Extremely high risk |
Note: BMI is a screening measure and is not used to diagnose body fatness or health. Consult a healthcare provider for a more comprehensive assessment.
FAQs
How do I calculate BMI manually?
BMI is calculated by dividing your weight in kilograms by your height in meters squared.
Formula: BMI = weight (kg) ÷ height² (m²)
What is a healthy BMI range for adults?
For most adults, a healthy BMI falls between 18.5 and 24.9, according to global health standards.
Is BMI different for men and women?
The BMI formula is the same for both men and women. However, men and women store body fat differently, so BMI results may be interpreted differently in some cases.
Can BMI be inaccurate for athletes?
Yes. Athletes and highly muscular individuals may have a higher BMI even though they have low body fat, making BMI less accurate for them.