Estimate a healthy body weight range, BMI category, ideal weight targets, and practical calorie guidance for adults in the US and UK.
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This tool provides estimates for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Healthy weight ranges, BMI, calorie needs, and waist-related risk indicators vary based on age, body composition, ethnicity, muscle mass, health conditions, pregnancy status, and other personal circumstances. For official guidance, review resources from the CDC, NHLBI/NIH, and NHS. Always consult a qualified healthcare professional before making medical, nutrition, weight-loss, or exercise decisions.
freeusukcalculator.com
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A healthy weight is the range that puts your BMI between 18.5 and 24.9. The calculator converts that BMI band into a pounds/kilograms range for your specific height.
It uses weight = BMI Γ height in metres squared, solved at BMI 18.5 (lower bound) and 24.9 (upper bound), so you see the full healthy range rather than a single number.
It is a useful guide for most adults but does not separate muscle from fat. Very muscular people, older adults and some ethnic groups may have a healthy weight slightly outside the standard band.
Use it as a starting signal, not a diagnosis. Pair it with waist size and a chat with a healthcare professional before making big changes.