Home / BMI Calculator

BMI Calculator

Your BMI as a first guide to medically supervised weight loss.
  • Calculate and classify BMI
  • Check your next step
Check Your Eligibility
Calculate BMI
BMI-Rechner als erste Orientierung für medizinisch begleitetes Abnehmen bei The Body Clinic
dr nicolette lammers the body clinic

This page has been reviewed by
Dr. Nicolette Lammers.

BMI-Calculator

180 cm
120 cm
250 cm
kg
([weight] / ([height] * [height]) * 10000)
Underweight (BMI < 18.5)
Your body weight is below the recommended range. Medical weight loss is not advised and could carry health risks. We recommend speaking with your GP to receive appropriate guidance and support.
Normal weight (BMI 18.5 – 25)
Your body weight is within the healthy range. Medical weight loss with medication is not necessary. If you have questions about maintaining a healthy lifestyle, feel free to reach out to us.
Leichtes Übergewicht (BMI 25 – 26,9)
Sie haben leichtes Übergewicht. Eine Behandlung mit Medikamenten ist nicht vorgesehen, jedoch können Sie unser Coach-Only-Programm in Anspruch nehmen. Dieses Programm konzentriert sich auf Lebensstiländerungen unter professioneller Anleitung, ohne den Einsatz von Medikamenten.
Termin vereinbaren
Overweight with Increased Risk (BMI 27 – 29,9)
Your BMI falls within a range that may be associated with a higher risk of weight-related health conditions. If you have conditions such as high blood pressure, prediabetes, type 2 diabetes, or sleep apnea, you may be eligible for medical weight loss with medication.
Make an Appointment
Obesity (BMI 30 – 39,9)
You may be eligible for treatment with medication. At The Body Clinic, we offer a carefully designed, medically supervised program tailored to your individual needs.
Make an Appointment
Severe Obesity (BMI ≥ 40)
With severe obesity, medical support is especially important. You may be eligible for treatment with medication. We provide professional guidance and will work with you to create a personalized treatment plan.
Make an Appointment

Calculate Your BMI and Understand Your Result

Enter your height and weight. The calculator determines your BMI and shows which adult BMI category your result falls into.

Note: Your BMI is a first indication. Whether medically supervised weight loss may be suitable depends on further factors.

Check Your Eligibility
Clarify Eligibility · Free Initial Consultation · Start Your Programme

BMI Is a Starting Point, Not a Diagnosis

BMI helps to quickly place body weight in relation to height. But this value alone is not enough to decide whether, and which, weight loss approach may be suitable.

Waist circumference, existing conditions, medication, blood values, everyday life and previous weight loss attempts also matter. That is why an elevated BMI should not be viewed in isolation.

abnehmen mit spritzen aerztliche betreuung the body clinic

Body Mass Index in Adults

BMI Chart for Adults

BMI Value Classification
40.0 and above Obesity Class III
35.0–39.9 Obesity Class II
30.0–34.9 Obesity Class I
25.0–29.9 Overweight
18.5–24.9 Normal Weight
below 18.5 Underweight

What the BMI Categories May Mean

BMI 25–29.9

Take a closer look: Waist circumference, blood values and previous weight loss attempts may now become relevant.

BMI 30–34.9

Seek medical guidance: Risks, symptoms and possible next steps should now be assessed individually.

BMI 35–39.9

Get structured support: A clear plan can now help reduce weight in a sustainable way.

BMI 40 and Above

Plan individually: Medical guidance is especially important now to find a realistic long-term path.

BMI in Children and Adolescents

In children and adolescents, BMI is assessed differently than in adults. Although the value is also calculated using height and weight, it must always be interpreted in relation to age, sex and development.

This is why percentiles are used. A percentile shows how a child’s BMI compares with that of children of the same age and sex. The 90th percentile, for example, means that the BMI is higher than that of 90 % of the comparison group.

Fixed adult thresholds such as 25, 30 or 40 do not apply here. The Body Clinic explains how parents can better understand BMI, weight development and possible warning signs in the guide Overweight in Children and Adolescents.

Criterion Classification What Does It Mean?
below the 10th percentile possible underweight The BMI is lower than that of most children of the same age and sex and should be viewed over time.
10th to 90th percentile normal range The BMI is within the expected range for age and sex.
above the 90th percentile overweight The BMI is higher than that of 90 % of the comparison group and should be interpreted in context.
above the 97th percentile obesity The BMI is clearly elevated and should be discussed with a paediatrician.
strong increase over time noticeable development Even without one single threshold, rapid weight gain can be medically relevant.

Medically Supervised Weight Loss, Online or In Person

Check Your Eligibility
Our Locations

Why BMI Alone Does Not Tell the Whole Story

BMI is a useful starting point because it is quick to calculate and gives an initial indication. However, deciding whether a weight loss programme may be medically appropriate requires more than this one value.

What matters is what lies behind the BMI:

  • Weight Development
  • Everyday Symptoms
  • Previous Weight Loss Attempts
  • Health Values
  • Suitable Support

That is why The Body Clinic does not make decisions based on BMI alone. We look at your personal situation and assess which weight loss approach may be right for you.

Check Your Eligibility
Clarify Eligibility · Free Initial Consultation · Start Your Programme

What BMI Does Not Show

Fat Distribution

Abdominal fat can be more relevant than weight alone.

Body Composition

Muscle mass and body type are not distinguished.

Metabolism

Blood pressure, blood sugar and blood lipids also matter.

Weight Development

Rapid changes can be medically important.
bmi einordnung abnehmen beratung body clinic

Medically Supervised Weight Loss, Tailored to Your BMI and Everyday Life

If your BMI is elevated, it can be a reason to plan your next step more consciously. What matters is not only the number itself, but which approach is realistic, medically appropriate and manageable in everyday life.

At The Body Clinic, medically supervised weight loss therefore begins with a personal assessment. BMI, health factors, previous weight loss attempts, everyday life and your goal are considered together. Depending on your situation, a programme with or without medication may be suitable.

Find Your Weight Loss Method

Three treatment paths, one goal: physician-supervised weight loss tailored to your eligibility and everyday life.

Included in all programs:

  • Initial medical assessment
  • Individual treatment plan
  • Physician support throughout the program
  • Nutritional counseling and coaching
  • Digital support for everyday life

Lose Weight with Injections

medizinisch begleitet abnehmen mit mounjaro landingpage the body clinic
  • Physician-supervised injection program
  • GLP-1 or GIP/GLP-1 therapy, if eligible
  • From €139/month incl. medication¹
  • Home delivery¹
Learn More

Lose Weight with Tablets

abnehmen mit tabletten mounjaro landingpage the body clinic
  • Physician-supervised treatment option
  • Tablets only if medically appropriate
  • Price and availability on request
  • Guided program instead of a single prescription
Learn More

Non-Medication Weight Loss

abnehmen ohne medikamente the body clinic
  • Nutrition analysis, counseling, and coaching
  • Focus on routines and lifestyle
  • From €120
  • Individual program duration based on your situation
Learn More

Frequently Asked Questions About BMI

A medical assessment can be useful if your BMI is elevated and additional factors such as symptoms, abdominal fat, existing conditions or previous unsuccessful weight loss attempts are involved. A BMI of 30 or above falls within the obesity range. At that point, it is especially helpful to look at BMI not just as a number, but in a medical context.
Yes. A BMI between 25 and 29.9 falls within the overweight range. This does not automatically mean that treatment is needed. The value becomes more relevant when additional factors are present, such as waist circumference, blood sugar, blood pressure, symptoms or significant weight gain.
Yes, that is possible. BMI does not show where body fat is stored or how body weight is composed. Abdominal fat, blood values, blood pressure and family risk factors can still be important, even if BMI is not clearly elevated.
BMI can be one factor, but it does not determine on its own whether weight loss medication is suitable. Medication must always be assessed medically. In addition to BMI, existing conditions, risks, other medication, previous weight loss attempts and the personal treatment goal all matter.
Both can be useful. BMI classifies body weight in relation to height. Waist circumference can additionally indicate whether increased abdominal fat is present. For medical assessment, the combination of BMI, waist circumference and health values is often more meaningful.

Sources

Schedule an Appointment

Click the button below to book your initial consultation with our medical assistant. We look forward to supporting you on your journey to a healthy weight.
Check your eligibility
Scroll to Top