BMI Calculator (Body Mass Index)
The classic body mass index — useful, but it cannot see visceral fat. See why your waist matters more.
BMI is the most widely used weight metric. It is a quick population screen, but it cannot tell muscle from fat or show where fat sits — which is what actually drives metabolic disease.
BMI is a population statistic, not a measure of metabolic health. A person can have a "normal" BMI and still have fatty liver and insulin resistance. The Salinas Method focuses on hormones and visceral fat, not a single weight number.
Enter your values above to see your result.
Formula
BMI = weight (kg) / height (m)²
How it is calculated
BMI divides your weight by the square of your height. Under 18.5 is underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obesity.
Its weakness: it treats muscle and fat the same and ignores fat distribution. A muscular athlete and a person with visceral obesity can share the same BMI.
That is why waist-to-height ratio and metabolic markers like HOMA-IR tell you far more about real risk than BMI alone.
Frequently asked questions
Is a normal BMI safe?
Not necessarily. "Normal-weight" people can still have visceral fat, fatty liver and insulin resistance — sometimes called TOFI (thin outside, fat inside).
Scientific references
- WHO. Obesity: preventing and managing the global epidemic. WHO Technical Report 2000
- Ashwell M et al. Obes Rev 2012;13:275-86
Educational tool — does not replace medical advice. Discuss your results with your doctor.