BMI, body-fat percentage, ideal weight, and basal metabolic rate — understand what your body is really made of.
Body mass index from your height and weight, with CDC weight categories.
CalculatorEstimate body-fat % with the U.S. Navy tape method from a few measurements.
CalculatorA healthy-weight range from the Devine, Robinson, Miller, and Hamwi formulas.
CalculatorBasal metabolic rate — the calories you burn at rest — via Mifflin-St Jeor.
BMI is a fast, useful screening number, but it was never designed to diagnose an individual's health, and knowing where it falls short helps you read it wisely.
Classic ideal-weight formulas like Devine and Robinson give a quick target from your height alone, but they were built for clinical dosing, not as a personal health goal.
A practical guide to estimating your body fat at home using the U.S. Navy tape method, plus healthy ranges by sex and age.
Understand basal metabolic rate, how the Mifflin-St Jeor equation estimates it, and how activity multipliers turn it into your total daily calorie needs.
This tool is for general informational and educational purposes only and is not medical advice. It does not diagnose, treat, or replace care from a qualified professional. Always consult a physician or other qualified healthcare provider about your individual health.