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Use the calculator for your own numbers.
BMI groups
Adult BMI ranges are commonly grouped as underweight below 18.5, healthy weight from 18.5 to 24.9, overweight from 25.0 to 29.9, and obesity at 30.0 and above.
BMI is a screening estimate rather than a diagnosis. It does not directly measure body composition.
How to use this information
Use the guide to understand the method, then open the calculator to substitute your own values. Small differences in assumptions can produce different answers, so these pages are best used for planning and reference.
General information only: ERICH Calculators provides general-purpose estimates and education. It is not a substitute for professional medical advice, diagnosis or treatment.
Frequently asked questions
Is this an exact medical or nutrition recommendation?
No. It is a general reference estimate only.
Why might two methods give different answers?
Different methods use different assumptions, formulas and reference points.
What calculator should I use next?
Use the linked calculator to enter your own measurements or goals.