BMI Calculator
10 toolsCalculate Body Mass Index and category.
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Calculate Body Mass Index from your height and weight. BMI is a quick screening number, not a diagnosis, and it doesn't distinguish muscle from fat or account for age, sex or body shape. Talk to a health professional about what your result means for you.
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Height
Weight
BMI
24.2
Category
Normal
How to use this tool
- 1Choose your height unit and enter your height.
- 2Choose your weight unit and enter your weight.
- 3Your BMI and category update instantly.
Frequently asked questions
How is BMI calculated?
Weight in kg ÷ (height in meters)².
What do the categories mean?
Under 18.5 Underweight, 18.5–24.9 Normal, 25–29.9 Overweight, 30+ Obese.
Is BMI accurate for everyone?
It's a screening measure and doesn't account for muscle mass or body composition.