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Privacy protection: All calculations are performed locally in your browser. No personal data is stored, ensuring your privacy.
Enter Height and Weight
cm
kg
Result Overview
0.0
Your BMI
Underweight
<18.5
<18.5
Normal
18.5-24
18.5-24
Overweight
24-28
24-28
Obese
≥28
≥28
📊
Health Advice
Your Ideal Weight Range
-
How to calculate your BMI
- Choose metric (kilograms and centimeters) or imperial (pounds, feet and inches).
- Enter your height and weight.
- Read your BMI value and the category it falls into, from underweight to obese.
- Use the included advice as general context, not a diagnosis.
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) = weight (kg) ÷ height (m)², a common indicator for evaluating a healthy weight range.
Is the calculation accurate?
It categorizes results according to WHO standards as a reference — consult a doctor for health concerns.
What do the BMI categories mean?
The World Health Organization ranges are: under 18.5 underweight, 18.5 to 24.9 normal, 25 to 29.9 overweight, and 30 or above obese. The bands are the same in metric and imperial mode.
Is BMI accurate for athletes and older adults?
Not always. BMI only compares weight to height, so muscular people can score "overweight" without excess fat, and it says nothing about body composition. Treat it as a rough screening number.
Is my height and weight stored anywhere?
No. The calculation runs locally in your browser the moment you enter the numbers, and nothing is saved or transmitted.
Technical References
- World Health Organization (WHO) BMI Classification — https://www.who.int/
- WHO — Body mass index classification: https://www.who.int/data/gho/data/themes/topics/topic-details/GHO/body-mass-index-(bmi)