How to use the bmi calculator
- Enter your weight in kilograms.
- Enter your height in centimetres.
- Click Calculate BMI to see your index and category.
- Track changes over time — but remember BMI is a screening tool, not a diagnosis.
BMI Calculator
Check your body mass index (BMI) — a widely used screening measure that relates weight to height. Enter your weight in kilograms and height in centimetres for an instant result with the standard adult category.
Your BMI
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BMI Calculator — FAQs
How is BMI calculated?
BMI = weight (kg) ÷ height (m)2. For example, 70 kg at 1.75 m gives 70 ÷ 3.0625 = 22.9.
What are the BMI categories?
Under 18.5 is underweight, 18.5–24.9 is the healthy range, 25–29.9 is overweight, and 30 or above is the obese range for adults.
Is BMI accurate for athletes?
Not always. BMI does not distinguish muscle from fat, so very muscular people may score high without excess body fat.
Should I see a doctor about my BMI?
BMI is informational only on ToolKishop. For health decisions, please consult a qualified medical professional.
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