Enter your height and weight to calculate your Body Mass Index.
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Healthy weight for your height:
BMI is a screening tool, not a medical diagnosis. It does not account for muscle mass, age, or body composition. Consult a healthcare professional for personalised advice.
Frequently Asked Questions
What is a healthy BMI?
According to the World Health Organization, a BMI between 18.5 and 24.9 is considered healthy for most adults. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is classified as obese.
How is BMI calculated?
BMI is your weight in kilograms divided by the square of your height in metres: BMI = kg ÷ m². In imperial units: BMI = (lbs ÷ in²) × 703.
Is BMI accurate?
BMI is a useful first-pass screening tool but has real limitations. It doesn't account for muscle mass, bone density, age, sex, or fat distribution. Athletes with high muscle mass often show an elevated BMI despite being very healthy. Always consult a healthcare professional for a full assessment.
Is BMI different for men and women?
The formula is the same for both, but the health implications can differ — women typically carry more body fat than men at the same BMI. Standard WHO ranges apply to both sexes for general screening purposes.
What BMI is considered obese?
A BMI of 30 or above is classified as obese. This breaks down further into Class 1 (30–34.9), Class 2 (35–39.9), and Class 3 / severe obesity (40+). A BMI of 25–29.9 is overweight.