TempoLife › Nutrition & fitness glossary › BMI
BMI
Body Mass Index — a screen relating your weight to your height.
BMI relates weight to height: weight in kilograms divided by height in metres squared. It sorts adults into underweight, healthy weight, overweight and obese bands.
It is a population screening tool, not a diagnosis. It cannot tell muscle from fat, so a muscular athlete can read "overweight" while carrying very little body fat.
Used alongside other signals — waist size, body composition, how clothes fit — BMI is still a useful, fast first check, especially for tracking your own trend over time.
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Frequently asked questions
BMI?
Body Mass Index — a screen relating your weight to your height. BMI relates weight to height: weight in kilograms divided by height in metres squared. It sorts adults into underweight, healthy weight, overweight and obese bands.
