BMI Calculator

Check your Body Mass Index using metric or imperial units. Enter your height and weight to get your BMI score and category immediately.

Height (cm)

Weight (kg)

Height (ft)

Height (in)

Weight (lbs)

Your BMI

About this calculator

This BMI calculator estimates your Body Mass Index from your height and weight and labels the result against standard categories. It is designed for quick checks and supports both centimetres and kilograms or feet, inches and pounds. You can switch units at any time and your inputs are kept on the page.

BMI is a long used screening tool rather than a complete assessment of health. It does not distinguish between fat and muscle and it does not account for body composition, age or ethnicity. Very muscular people can score as overweight, and children require different charts. Treat your result as a helpful pointer only. If you have concerns, speak with a health professional who can advise in context.

For everyday use, BMI remains a simple way to spot outliers. Keep an eye on trends over time rather than pinning everything on one reading. Small, sustainable changes to activity and diet tend to matter more than chasing a number.

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