⚖️ BMI Calculator
Enter your height and weight to get your Body Mass Index (BMI) along with the standard WHO weight category. Supports both metric (cm / kg) and imperial (in / lb) units. All calculations happen in your browser.
🔒 Runs 100% in your browser. Your data never leaves your device.
How to use
- Choose metric or imperial units.
- Enter your height and weight.
- Your BMI and weight category appear instantly.
FAQ
How is BMI calculated?
BMI is your weight in kilograms divided by your height in metres squared (kg/m²). For imperial units, it is weight in pounds ÷ height in inches squared × 703.
What is a healthy BMI range?
By WHO standards: under 18.5 is underweight, 18.5–24.9 is normal, 25–29.9 is overweight, and 30 or above is obese.
Is BMI accurate for everyone?
BMI is a general guide and does not account for muscle mass, age or body composition. Consult a professional for a full assessment.