Enter your weight and height above to calculate your BMI.
How to Calculate Your BMI
- Select your preferred unit system — Metric (cm/kg) or Imperial (ft/in/lbs).
- Enter your height and weight.
- Your BMI, health category, and healthy weight range appear instantly.
BMI Categories
- Underweight — BMI below 18.5
- Normal weight — BMI 18.5–24.9
- Overweight — BMI 25–29.9
- Obese — BMI 30 and above
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It applies to adult men and women and is used as a screening tool for weight categories associated with health risks.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't account for muscle mass, bone density, or fat distribution. Athletes often have a high BMI due to muscle, not fat. Consult a healthcare provider for a complete assessment.
What is a healthy BMI?
For most adults, a BMI between 18.5 and 24.9 is considered healthy. However, healthy weight varies by age, sex, and ethnicity. Some health organizations use different thresholds for certain populations.