BMI Calculator
Calculate your Body Mass Index (BMI) and find out if your weight is in the normal range. According to WHO classification.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
What is the BMI and how is it calculated?
BMI (Body Mass Index) is weight in kilograms divided by height in meters squared. For example, 75 kg at 1.80 m height gives a BMI of 23.1, which falls in the normal weight range.
What are the BMI categories?
WHO categories: Underweight below 18.5, normal weight 18.5-24.9, overweight 25.0-29.9, obesity class I 30.0-34.9, class II 35.0-39.9, class III 40.0 and above.
What is the BMI Calculator?
The BMI calculator computes your Body Mass Index as a metric for classifying body weight according to WHO categories.
How does the BMI Calculator work?
Enter weight and height. BMI = weight (kg) / height (m) squared. The result is assigned to WHO categories: underweight (< 18.5), normal (18.5-24.9), overweight (25-29.9), obese (30+).
Key Data and Facts
Normal weight: BMI 18.5-24.9. BMI does not account for muscle mass or body composition. For children age- and sex-specific percentiles apply.
Step-by-Step Guide
How to calculate Ihren BMI step by step: 1. Koerpergewicht in Kilogramm enter: Wiegen Sie sich morgens nuechtern in leichter Kleidung für das genaueste Ergebnis. 2. Koerpergroesse in Metern enter: Z. B. 1,78 m (nicht 178 cm). 3. BMI-Formel anwenden: BMI = Gewicht (kg) / (Groesse in m)^2. 4. WHO-Kategorie ablesen: Starkes Untergewicht: unter 16,0. Untergewicht: 16,0-18,4. Normalgewicht: 18,5-24,9. Praeadipositas (Uebergewicht): 25,0-29,9. Adipositas Grad I: 30,0-34,9. Adipositas Grad II: 35,0-39,9. Adipositas Grad III: ab 40,0. Beispiel 1: Frau, 68 kg, 1,65 m. BMI = 68 / (1,65)^2 = 68 / 2,7225 = 24,98 -- Normalgewicht (knapp). Beispiel 2: Mann, 95 kg, 1,80 m. BMI = 95 / (1,80)^2 = 95 / 3,24 = 29,32 -- Praeadipositas (Uebergewicht). Normalgewicht-Bereich für 1,80 m: 59,9 kg bis 80,7 kg. Hinweis: Der BMI beruecksichtigt nicht die Koerperzusammensetzung. Sportler mit hoher Muskelmasse koennen einen erhoehten BMI haben, ohne uebergewichtig zu sein. Für eine differenziertere Bewertung koennen Sie ergaenzend den Taillenumfang messen (Risiko erhoehrt ab 94 cm bei Männern, 80 cm bei Frauen nach WHO).
Calculation Example
Frau, 68 kg, 1,65 m: BMI = 68 / 2,7225 = 24,98 (Normalgewicht). Mann, 95 kg, 1,80 m: BMI = 95 / 3,24 = 29,32 (Praeadipositas). Normalbereich bei 1,80 m: 59,9-80,7 kg.
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