BMI Calculator
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BMI Calculator
Check your Body Mass Index and find out if you're a healthy weight
Sex
yrs
⚕️ Black, Asian and other minority ethnic groups with a BMI of 23 or more have a higher risk of type 2 diabetes and other long term illnesses
🚶 Physical activity: brisk walking, running, cycling, active job, etc.
yrs
mo
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Your BMI
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Category
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Healthy Weight Range (BMI 18.5–24.9)
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BMI
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BMI Centile
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Category
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Centile Position
0th2nd50th91st98th100th
Underweight
Below 18.5
Healthy weight
18.5 – 24.9
Overweight
25.0 – 29.9
Obese (Class I)
30.0 – 34.9
Obese (Class II)
35.0 – 39.9
Obese (Class III)
40 and above
Underweight
Below 2nd centile
Healthy weight
2nd – 91st centile
Overweight
91st – 98th centile
Obese
98th centile and above
⚕️ BMI is a screening tool, not a diagnostic measure. It may not be accurate for athletes, pregnant women, or certain ethnic groups. Always consult a healthcare professional for personalised advice.