BMI Calculator with Age, Gender & Body Fat Percentage

Use our free BMI Calculator with age, gender, and optional Body Fat Percentage (US Navy method). Instantly see your BMI category and healthy weight range, in metric (kg, cm) or imperial (lbs, feet, inches). Private, fast, and mobile-friendly.

Updated Sep 9, 2025

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Quick link: BMI chart

Calculate BMI in metric or imperial and see a healthy weight range for your height. For deeper context, add age and gender and optionally estimate Body Fat Percentage (US Navy).