BMI Calculator
Estimate your body mass index (BMI) from your height and weight, and see the standard weight category it falls into.
Your BMI
23
Category
Healthy weight
What Your Result Means
BMI is a screening measurement, not a diagnosis. A BMI between 18.5 and 24.9 falls into the "healthy weight" category used by major health organizations, but BMI does not distinguish between muscle and fat, and doesn't account for factors like age, sex, or body composition.
How It Is Calculated
BMI = weight (kg) / [height (m)]²
Worked Example
A person who is 5'10" (178 cm) and weighs 160 lbs (73 kg) has a BMI of about 23.0, which falls into the "healthy weight" category.
Important Assumptions
- Uses the standard WHO/CDC BMI categories: under 18.5 underweight, 18.5-24.9 healthy weight, 25-29.9 overweight, 30+ obesity.
- Does not account for muscle mass, bone density, age, or sex.
- Not applicable to children - designed for adults.
Frequently Asked Questions
- Is BMI accurate for athletes?
- BMI can overestimate body fat in very muscular people, since it doesn't distinguish muscle from fat. It's a general screening tool, not a precise body composition measurement.
- What should I do with my BMI result?
- Use it as one general data point. For a full picture of your health, talk to a healthcare provider who can consider your BMI alongside other factors.
Related Calculators
Methodology
This calculator uses the standard BMI formula and WHO/CDC weight categories. See our methodology page for details.
This calculator provides estimates for educational purposes only. It does not provide medical diagnosis and is not a substitute for professional medical advice. Consult a qualified healthcare provider about your health.