BMI Calculator
Check your body mass index quickly & easily
What is BMI?
Body Mass Index (BMI) is a simple calculation that uses your height and weight to estimate how much body fat you have. It's a widely used screening tool to categorise individuals into weight status groups that may indicate health risks.
BMI Formula
Metric: BMI = weight (kg) ÷ height² (m)
Imperial: BMI = ( weight (lbs) ÷ height² (in) ) × 703
BMI Categories (WHO)
- Below 18.5 – Underweight
- 18.5 – 24.9 – Normal / Healthy weight
- 25 – 29.9 – Overweight
- 30 – 34.9 – Obesity Class I
- 35 – 39.9 – Obesity Class II
- 40 and above – Obesity Class III (Severe)
How to Interpret Your Result
Your BMI result gives a rough idea of your body fat level, but it does not measure fat directly. Factors like muscle mass, bone density, age, and ethnicity can influence the number. Always consult a healthcare professional for a comprehensive health assessment.
Limitations of BMI
- Athletes with high muscle mass may have a high BMI but low body fat.
- Older adults often lose muscle, so BMI may underestimate body fat.
- BMI doesn't show fat distribution (e.g., abdominal fat).
⚕️ Disclaimer: This BMI calculator is for informational purposes only and does not replace professional medical advice.
