Metric calculation
unit = metricweight = 70height = 175
Result: BMI: 22.86 — Normal weight (WHO category: 18.5–24.9). Healthy weight range for this height: 56.7–76.8 kg.
BMI Calculator
Calculate your Body Mass Index (BMI) using the standard WHO formula. Enter your height and weight in metric (kg/cm) or imperial (lb/in) units. Get instant results with WHO weight category classification and health context.
Enter your values and press Calculate — the result appears here.
Worked examples
Imperial calculation
unit = imperialweight = 154height = 69
Result: BMI: 22.7 — Normal weight. Healthy weight range: 124.5–169.3 lb.
Frequently asked questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It is calculated as weight divided by height squared.
What are the BMI categories?
Underweight: <18.5, Normal: 18.5–24.9, Overweight: 25–29.9, Obese: ≥30. These are WHO standard categories.
Is BMI accurate for everyone?
BMI is a screening tool, not a diagnostic. It may not accurately reflect body fat for athletes, elderly, or pregnant women.
Is my data stored?
No. All calculations happen in real-time and data is not stored.
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