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BMI Calculator
Calculate your Body Mass Index (BMI) to check if you're at a healthy weight. Supports both metric (kg/cm) and imperial (stone/feet) units.
Accurate Results
Works Worldwide
Instant Calculations
Your BMI
24.2
Normal
Healthy weight range
Healthy Weight Range
53.5 kg - 72.3 kg
BMI Categories
Underweight< 18.5
Normal18.5 - 25
Overweight25 - 30
Obese Class I30 - 35
Obese Class II35 - 40
Obese Class III> 40
How This Calculator Works
BMI is calculated using the formula: BMI = Weight (kg) ÷ Height² (m²) For imperial units, we convert: • Height: (feet × 12 + inches) × 0.0254 = meters • Weight: (stone × 14 + pounds) × 0.453592 = kg BMI Categories (WHO Classification): • Underweight: < 18.5 • Normal: 18.5 - 24.9 • Overweight: 25 - 29.9 • Obese Class I: 30 - 34.9 • Obese Class II: 35 - 39.9 • Obese Class III: ≥ 40
Frequently Asked Questions
Health Tools
Quick Facts
Healthy BMI range18.5 - 24.9
UK avg (men)27.6
UK avg (women)27.4
Ideal BMI~22
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