BMI Calculator
Enter your height and weight to get your BMI, your healthy weight range, and a plain-English explanation of what it means. Uses NHS categories and includes adjusted thresholds for South Asian and Black African backgrounds.
Height
That's 5ft 7in
170 cmWeight
That's 11st 11lb / 165 lbs
75 kgSex (used for waist measurement guide)
Ethnic background
BMI thresholds vary by ethnicity. Select the option that best describes you — this adjusts your results to reflect current NHS and WHO guidance.
Your BMI
26
Overweight
NHS range: 25 – 29.9
Healthy weight range for your height
53.5 – 72 kg
8st 6lb – 11st 5lb / 118 – 159 lbs
To reach a healthy weight, you would need to lose approximately 3 kg (0st 7lb / 7 lbs)
BMI is a useful screening tool but does not directly measure body fat. It may overestimate risk in muscular individuals and underestimate it in older adults. Always speak to a clinician for a full assessment.
See how Clinic Pro supports weight loss services →What the BMI categories mean
Underweight (below 18.5)
Being underweight can affect your immune system, bone health, and energy levels. A GP or dietitian can help identify the cause.
Healthy weight (18.5 – 24.9)
A BMI in this range is associated with the lowest risk of weight-related health problems. Regular check-ups and an active lifestyle help maintain it.
Overweight (25 – 29.9)
Being overweight increases the risk of conditions like type 2 diabetes, high blood pressure, and joint problems. Small changes to diet and activity can make a meaningful difference.
Obese (30 and above)
Obesity significantly increases the risk of serious health conditions. NHS-funded and private weight loss programmes — including GLP-1 medications like Mounjaro and Wegovy — can help.
A note on BMI and waist measurement
BMI is a helpful starting point, but it does not tell the whole story. Two people with the same BMI can have very different health risks depending on where they carry their weight. A large waist measurement — even with a BMI in the healthy range — is associated with higher risk of heart disease and type 2 diabetes. That is why waist size matters alongside BMI.