BMI Calculator
Easily calculate your body mass index now. The result is a guideline and does not replace a medical diagnosis.
Note: This calculator is intended solely for general information and educational purposes. The result is a calculated estimate based on a scientific formula and does not constitute a medical diagnosis, assessment, or treatment recommendation. It is not a substitute for an examination, consultation, or diagnosis by a medical doctor.
Do not make any health-related decisions based solely on this result, and consult a medical professional if you have any symptoms.
What is BMI?
The Body Mass Index (BMI) is one of the best-known metrics for assessing body weight in relation to height. It is used worldwide in medicine and also serves as a quick everyday guide to whether someone is underweight, at a normal weight, or overweight. For men in particular, BMI can provide an initial indication of health risks such as cardiovascular disease, diabetes, or hormonal changes.
How is BMI calculated?
The formula for BMI is:
BMI = Body weight (kg) / (Height in m)²
For example: A man weighing 85 kilograms and measuring 1.80 meters tall has a BMI of 26.2 – according to the WHO, this corresponds to being slightly overweight.
BMI values and their meaning
The World Health Organization (WHO) defines the following ranges:
- Underweight: below 18.5
- Normal weight: 18.5 – 24.9
- Overweight (pre-obesity): 25 – 29.9
- Obesity Grade I: 30 – 34.9
- Obesity Grade II: 35 – 39.9
- Obesity Grade III: 40 and above
This classification makes BMI a simple and internationally comparable measure of body weight.
Limitations of BMI - why men should take a closer look
BMI alone does not tell the whole story about health. It does not take into account whether the weight consists of muscle or fat mass. A sporty, muscular man can therefore have a BMI in the "overweight" range, even though his body fat percentage is low and there are no health risks.
Therefore, men should always consider BMI in combination with other measurements:
- Waist circumference (ideally under 94 cm)
- Waist-to-hip ratio
- Body fat percentage (e.g., via bioimpedance or caliper measurement)
- Visceral fat (fat in the inner abdominal cavity, particularly hazardous to health)
Abdominal fat in particular is critical, as it promotes inflammation, strains the metabolism, and can negatively affect testosterone levels.
Health risks associated with an elevated BMI
A persistently elevated BMI of 25 or more can increase the risk of various diseases:
- High blood pressure and cardiovascular disease
- Type 2 diabetes
- Lipid metabolism disorders
- Joint problems and back pain
- Sleep apnea
- Testosterone deficiency and loss of libido
Particularly with a BMI over 30, the risk of erectile dysfunction also increases, often triggered by narrowed blood vessels, hormonal changes, and chronic inflammation.
Conclusion: BMI as a starting point, not the sole measure
BMI is a helpful initial indicator, but should not serve as the only criterion for assessing health. Men benefit particularly when they also consider waist circumference, body fat percentage, fitness level, and hormonal status alongside BMI. This creates a more complete picture of their own health and personal risk of disease.
Do you have any questions?
The most important answers about weight, metabolism, and the metabolism check.
From what point on are you considered overweight?
From what point on are you considered overweight?
A BMI of 25 or higher is considered overweight, and 30 or higher is considered obesity. For men, waist circumference is also a factor: over 102 cm is considered a significantly increased risk—regardless of BMI.
What does the metabolic check measure?
What does the metabolic check measure?
11 values from a small blood sample that you take at home: blood lipids, liver, kidney, thyroid, inflammation and vitamin B12. Blood sugar, HbA1c and insulin are not included. You receive the report digitally and, if you wish, discuss it via video with an independent doctor.
Do I need to have a lab test first?
Do I need to have a lab test first?
No. You can book a video consultation directly. The doctor will determine which lab tests are appropriate—you’ll receive the test kit afterward. If you’d prefer to have a consultation using your existing results, start with the metabolic check.
How much does it cost—and will my health insurance cover it?
How much does it cost—and will my health insurance cover it?
The video consultation costs approx. €90–100 per appointment and is billed by your doctor according to the GOÄ; you can see the price of the metabolic check above. If medically recommended, you order follow-up tests in the same way as the first test. Both are out-of-pocket expenses; some private health insurance providers may reimburse medical services. The costs of medically prescribed measures are not part of our offer.